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1 Horus Vision Reticles Model 2000 series User’s Manual 1st Edition January 2013 January 25, 2013. Copyright 2013 Horus Vision, LLC. All rights reserved. US Petent No. X,XXX,XXX Written consent of Horus Vision LLC is required to copy or use any of the material in this manual.

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Page 1: reticles manual v02 - Horus Vision · 2020. 4. 16. · Hunting Reticle General hunting reticle without illumination. IOA (Inch Of Angle) range finder in the lower left quadrant. Quick,

 

1

Horus Vision

Reticles Model 2000 series 

User’s Manual 1st Edition

January 2013

January 25, 2013. Copyright 2013 Horus Vision, LLC. All rights reserved. US Petent No. X,XXX,XXX Written consent of Horus Vision LLC is required to copy or use any of the material in this manual.

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2

CONTENTS

 Introduction .......................................................................................................................................................... X

About Horus Vision ................................................................................................................................ XSafety Warning ....................................................................................................................................... X

Horus Reticles Overview ..................................................................................................................................... X List of Horus Reticles ............................................................................................................................. XComparison Chart of Horus Reticle Features ........................................................................................ X

The Standard Horus Grid .................................................................................................................................... X Mil Markers ............................................................................................................................................. X Range Finding ........................................................................................................................................ X Elevation Holds ...................................................................................................................................... X Wind and Moving-Target Holds ............................................................................................................. X Second Shot Correction ......................................................................................................................... X

The H59 Reticle .................................................................................................................................................. X Crosshair ................................................................................................................................................ X Moving Target Holds .............................................................................................................................. X Speed-Shooting Drop Holds .................................................................................................................. X Holdover Dots ................................................................................................................................ X

The TReMoR Reticle ........................................................................................................................................... X Refined Mil Markers .............................................................................................................................. X Crosshair ................................................................................................................................................ X Moving Target Holds .............................................................................................................................. X Speed-Shooting Wind Holds .................................................................................................................. X Speed-Shooting Drop Holds .................................................................................................................. X Holdover Crosses ................................................................................................................................... X

The H50 Reticle .................................................................................................................................................. X Key Features ......................................................................................................................................... X Bold Aiming Ring .................................................................................................................................... X Moving Target Holds .............................................................................................................................. X

Additional Reticle Features ................................................................................................................................. X Illumination ............................................................................................................................................. X Supplemental Range Finder .................................................................................................................. X Grey-Light Duplex Stadia ....................................................................................................................... X

Additional Information ......................................................................................................................................... X Technical Data .................................................................................................................................................... X

Standard Horus Grid Specs ................................................................................................................... X H59 Reticle Specs .................................................................................................................................. X TReMor2 Reticle Specs ......................................................................................................................... X More Technical Drawings (H37, H425, H32, H36, H70, H50) ............................................................... X

Warranty .............................................................................................................................................................. X Legal Notice ........................................................................................................................................................ X Contact ................................................................................................................................................................ X Appendices .......................................................................................................................................................... X

How to Calculate Drop Compensation ................................................................................................... X How to Calculate Wind Compensation .................................................................................................. X How to Calculate Moving-Target Compensation ................................................................................... X

Equations ............................................................................................................................................... X

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INTRODUCTION

ABOUT HORUS VISION

Horus Vision’s cutting-edge technology improves shooting accuracy at extended ranges and increases the likelihood of a

first-round hit. Our patented reticles reduce the need for manual scope manipulation and mental calculation. Horus Vision’s

simplified shooting system improves accuracy at any distance and can make anyone an expert marksman. Our ballistics

algorithms were developed and refined by the former chief of ARDEC's small-arms division, William C. Davis. Horus Vision

was founded in 2000 and is headquartered in San Bruno, California.

SAFETY WARNING

Always use great care with all firearms. A mistake in judgment or lapse of attention can result in serious injury or death.

The information in this manual, while believed to be accurate at the date of publication, is not warranted or represented to

be accurate, correct, or useful for any particular purpose. Use the information in this manual with caution and common

sense, and verify it with respect to your own firearms before use.

The author and publishing company accept no responsibility for errors in the information presented herein, or for

accidents, injuries, damage or any other problems which might arise as a result of your use of the information contained in

this book, and expressly disclaim all liability for injuries, death and damages, whether direct, incidental, consequential,

punitive or otherwise.

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HORUS RETICLES OVERVIEW Horus reticles are an evolutionary advancement in reticle design. Our patented reticle grid –the Standard Horus Grid–

replaces outdated crosshairs and mil dots with a purely visual system for making adjustments. Speed and accuracy

increase as turning knobs and counting clicks become a thing of the past. Range finding is also built directly into the grid.

All Horus reticles contain the Standard Horus Grid. Though implementation may vary in appearance from one reticle to

the next, the same visual system applies. In addition to the Standard Horus Grid, some Horus reticles provide advanced

Speed Shooting features for elevation adjustments, wind adjustments and moving target holds. These reticles include the

H59 and TReMoR.

Horus reticles are intuitive and so easy to use, they actually reduce training time to mere hours. They’re built with

ergonomically precise, high-quality optics, and unlike bulky mil dots, the Standard Horus Grid does not obscure targets.

All Horus grids are in milliradians except the H70, which is in shooters minute of angle (SMOA*).

Learn more by visiting http://www.HorusVision.com/reticles.php.

LIST OF HORUS RETICLES

 

TReMoR2 All About Faster Shooting Speed-shooting features make elevation and wind corrections fast and easy. Highly refined markings allow mil-ing at 0.1 mils. 1500 meters

H59 Improved Sniper Reticle Speed-shooting elevation guides for rapid drop adjustments, plus moving-target holds. Holdover dots for extra holds while providing a clear uncluttered view. 1500 meters

H25 Multi-Purpose General Reticle Bold duplex-style guides for grey light work. Hunters will appreciate the Inch of Angle (IOA) inverted "L" range finder. The illuminated pattern is well suited to night vision devices. 1500 meters

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(list of Horus reticles continued)

H37 Ultra Long Range Grid raised 4 mills higher for increased grid view at higher magnification, thus accommodating longer-range cartridges without requiring sloped bases. 2000 meters

H425 Hunting Reticle General hunting reticle without illumination. IOA (Inch Of Angle) range finder in the lower left quadrant. Quick, precise, shots from point-blank to 800 meters. 800 meters

H70 SMOA for Varmints Daylight varmint hunting reticle in inches and yards, the H70 grid is calibrated in the Shooter's Minute Of Angle (SMOA). Thin lines for aiming at varmint-size targets. 1500 meters

H50 Close Quarter Targets Bold aiming ring for near targets, grid for out to 600 meters. Versatile combo for incredible speed and distance advantage. Plus moving target holds from 4 to 20 mph. 800 meters

H32 Spotting Observational Measurement Mil line across the entire field of view for object measurement and target speed estimation. Square grid for ranging. target speed calculation, and 2nd-shot-correction. 1500 meters

H36 Spotting Observational Range Finder Inverted "L" range finder in Inch Of Angle (IOA). Square grid for ranging. target speed calculation, and 2nd-shot-correction. 1500 meters

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COMPARISON CHART OF HORUS RETICLE FEATURES

 

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THE STANDARD HORUS GRID

The Standard Horus Grid is a paradigm shift in reticle design. It replaces outdated mil dots, just like those same mil dots

once replaced antiquated crosshairs. The Standard Horus Grid is a purely visual system for making adjustments, entirely

eliminating the need to dial for elevation and windage.

Our patented grid works on the same principals as outdated mil dots. But it uses a purely visual system that's much faster

and more refined. Here's how it works. Traditional mil dot systems reposition your aim mechanically, requiring you to

manually turn knobs and count clicks when making adjustments. Each click of the knob repositions your aim by one

increment. Horus reticles take the knobs' increments and etch them onto the reticle in the form of a grid. Instead of turning

knobs, the shooter visually repositions aim up and down, left or right, using the Horus reticle grid. It all happens while

looking through the scope, so your eye and mind stay focused on target, instead of knobs and clicks. Best of all, it takes

mere seconds.

The Horus grid is not only faster that mil dots, it’s also more accurate. Typical mil dot reticles use bulky dots subtended by

1-mil gaps. The Standard Horus Grid uses fine lines that subtend down to 0.2 mils, providing an uncluttered view and

highly-refined hold points. The Horus grid also increases accuracy by eliminating mechanical error introduced by

incorrectly calibrated adjustment knobs.

All Horus reticles contain a version of the Standard Horus Grid. The implementation of the grid may vary in appearance

from one reticle to the next, but the same underlying procedures apply to them all. For purposes of this manual, we'll use

the H25 reticle's grid configuration as an example. To see other Standard Horus Grid configurations, see this manual’s

List of Horus Reticles or visit our reticles web page (http//www.horusvision.com/reticles.php).

MIL MARKERS

Hash Marks

The Standard Horus Grid is comprised of hash marks overlaid on the reticle's main stadia and drop lines. Major hashes

divide the grid into 1-mil increments, and measure 0.5 mils in length. Minor subtension hashes further divide the grid into

0.2-mil increments, and measure 0.2 mils in length. The lengths of the hashes and the distance between hashes can be

used for mil-ing targets.

Main Stadia

The Standard Horus Grid overlays the reticle's main horizontal and vertical stadia, marking them in 1-mil and 0.2-mil

increments. Thus, the main stadia can be used for mil-ing targets and placing holds.

Drop Lines

Drop lines occur in 1-mil increments below the main horizontal stadia, and are useful for placing elevation and drop

adjustments. Grid hashes increment each drop line, providing visual holds for windage and moving targets. These same

hash marks are useful for mil-ing targets.

See Figure 1.

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Figure 1: Standard Horus Grid features are highlighted in this rendering of the Horus H25 reticle. Red highlights actual grid markings. Grey highlights horizontal and vertical direction for adjustments.

RANGE FINDING

Any portion of the Standard Horus Grid can be used to mil targets for rage estimation.

Locate Object of Known Size

Locate an object of known size near the target you intend to shoot. You must know the object's precise size in order for

range finding to work. If you guess or use the wrong size, your range determination will be inaccurate and your shot will

likely be a miss. For our example, we'll consider a standard stop sign measuring 0.75 meters.

Mil Object

Place the Horus grid over the object you selected. Note how many mils the object occupies within the grid. To mil a

target's width, use the vertical hashes along horizontal stadia or drop lines. To mil a target's height, use horizontal hashes

running down the reticle's vertical stadia.

For our example, the stop sign covers three 0.2-mil spaces. Thus, it measures 0.6 mils wide. See Figure 2.

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Figure 2: The target spans across three 0.2 mil increments. Hence, we determine its width as 0.6 mils (3 x .2 = .6).

Calculate Range to Target

Determine range using the following formula:

Range = ( Actual Target Size x 1000 ) Mil-ed Target Size

Here are our example's numbers plugged into the formula.

Range = ( 0.75 meters x 1000 ) 0.6 mils = 1250 meters

Hence, for our example: range to target = 1250 meters.

You can use the same formula with English measuring units instead of metric. In that case, the numbers used for real-

world target size and resulting range are expressed in yards.

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ELEVATION HOLDS

The Standard Horus Grid provides a purely visual system for placing elevation holds, eliminating the need to dial

mechanical knobs. The grid’s numbered drop lines, occurring in 1-mil increments downward from the main horizontal

stadia, are used to quickly locate whole-mil drop positions. You can further refine your drop hold by using the minor

hashes occurring every 0.2-mils along the main vertical stadia.

Placing elevation hold is incredibly easy and takes only a moment. Simply position your target behind the hash mark

corresponding to your drop hold number. If your required drop hold is an odd number, simply hold between the two

nearest hash marks.

For our example, we’ll consider a drop hold of 7.5 mils. First, locate the 7-mil drop line. Next, directly beneath the 7-mil

drop line, locate the small hashes along the vertical stadia representing 7.4 and 7.6 mils. Place the target’s center directly

between them. See Figure 3.

Figure 3: A drop hold adjustment of 7.5 mils is depicted here.

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WIND AND MOVING-TARGET HOLDS

The Standard Horus Grid provides hashes spaced in .2 mil increments along the main horizontal stadia and drop lines.

These can be used to visually place horizontal holds for wind and moving targets, eliminating the time-consuming need to

dial mechanical knobs.

To place horizontal hold, vertically align your target with the hash mark corresponding to your horizontal-adjustment

number. For left holds, use the hashes to the left of the main vertical stadia; for right holds, use the hashes to the right of

the main vertical stadia.

For our example, we’ll consider a horizontal adjustment number of 5.6 mils for a leftward wind, with an elevation

adjustment of 6 mils. First, on the 6-mil drop line, locate the 5-mil hash left of reticle center. Next, locate the nearby minor

hash representing 5.6 mils. Directly position the target behind the intersection of the 6-mil drop line and 5.6-mil hash. See

Figure 4.

Figure 4: A wind adjustment of 5.6 mils for a leftward wind is depicted here, on the 6-mil drop line.

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SECOND SHOT CORRECTION

If you miss your first shot, the Standard Horus Grid features a method for rapidly correcting aim on your second shot.

Second Shot Correction provides a purely visual method for making a rapid, accurate, second-shot hit without any

calculations, guessing, turning knobs or counting clicks.

When looking through the Standard Horus Grid, visually lock onto the grid point where your missed bullet struck. Then

simply reposition that grid point directly over your target. You'll have a bulls'-eye hit. Yes, it really is that simple.

For our example, we’ll consider a missed first shot. We note the spot on the grid where the missed bullet struck, 8 mils

down and 5.4 mils right as indicated by the green X in Figure 5. We then reposition our aim visually, placing the missed-

shot’s grid point directly over our target, as shown in Figure 6.

Figures 5-6: Second Shot Correction is depicted. Figure 5: On a missed first shot, the green X indicates the grid position where the bullet impacted (8 mils down, 5.6 mils right). Figure 6: The shooter implements Second Shot Correction for a bull’s-eye hit, by placing the grid position where the missed-bullet impacted (8 mils down, 5.6 mils right) directly over the target.

LEARN MORE

Visit our Standard Horus Grid (http://osc.horusvision.com/standard_horus_grid.php) webpage for more detailed

instructions.

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THE H59 RETICLE The H59 reticle provides more windage and elevation hold capability than any optic in its class. Unobtrusive Holdover

Dots extend the Standard Horus Grid while allowing for a clear uncluttered view. The H59’s advanced features include

Speed Shooting Drop Markers to rapidly engage distant targets without knowing range, and Moving Target Holds. The

H59 reticle also contains the Standard Horus Grid for traditional mil-based shooting.

Figure 7: The H59 reticle shown at high magnification (LEFT) and low magnification (RIGHT).

KEY FEATURES

Speed Shooting Drop Markers, to rapidly place elevation holds. Based on the Accuracy 1st 12” drill, markers

eliminate the need to know range to target. Suited for targets out to 600 meters.

Moving Target Holds, to rapidly adjust for moving targets. Suited for targets out to 600 meters.

Standard Horus Grid for windage and elevation adjustments. Use this to place holds for moving targets, windage

and bullet drop compensation. Suited for targets from 0-1500 meters.

Holdover Dots extend the Standard Horus Grid in 1 mil increments, providing more hold markings without

obscuring the view. Shooters gain clear uncluttered access to targets.

Very fine reticle to aid in precise aiming at high power and distant ranges.

Center crosshair turned into a "dot and broken cross" for un-obscured, easily seen groupings.

Open field of view above center reticle for clear observation and spotting

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Figure 8: Key Features of the H59 are highlighted here.

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CROSSHAIR

The crosshair has a dot for refined holds and refined zero process. The sub tensions start out 0.5 mil to the left and right

for an uncluttered crosshair. The central dot is 0.05 mil and the main stadia lines stop 0.1 mils from the central dot.

Figure 9. The H59 replaces crosshair with 0.05-mil dot and 0.1-mil gap for a clear uncluttered view.

MOVING TARGET HOLDS

The H59 enables rapid adjustments for moving targets. You’ll notice in Figure 10 a series of even numbers next to short

vertical hashes, just above the reticle’s main horizontal stadia. These are Moving Target Holds. The numbers represent

speeds for moving targets at 2, 4, 6, 8 & 10 mph. These speeds are optimized for .308 caliber but may be used with many

other calibers.

Exact hold points occur where the short vertical hash touches the main horizontal stadia. For leftward moving targets, use

holds to the left of the main vertical stadia; for rightward moving targets use holds to the right.

Figure 10: H59 Moving Target Holds are shown circled in red.

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Additional Moving Target Holds start at 20 mils and continue every 10 mph thereafter to the left and right, shown in Figure

11.

Figure 11: Additional Moving Target Holds are shown circled in red above. Beginning at the 20-mil marker, they continue every 10 mils outward to 60 mils.

To hold on a moving target, locate the numbered hold which corresponds to your target's speed and direction. Place it

directly over your target. To hold on a target traveling at a speed between markings (such as 5 mph), hold between the

even numbers on either side of it (4 and 6 mph). To compensate for drop, adjust your hold downward in a straight vertical

line. If using the Standard Horus Grid for elevation, use a hold point in line with the appropriate speed. The H59 is

optimized for .308 calibers, so you may need to make an adjustment when using other calibers.

Figure 12: Illustrated here is a hold on the 5-mil drop line for a target moving at 4 mph from left to right, with .308 caliber. The hold was placed by locating the 4 mph Moving Target Hold, then adjusting directly downward to the appropriate drop line.

SPEED SHOOTING DROP HOLDS

The H59 contains Speed Shooting Drop Markers to help you rapidly determine an elevation hold for your target without

using the traditional mil relation formula for range-finding. This method works very well for targets out to 600 meters.

Based on the Accuracy First Speed Shooting Formula™ (a.k.a. the Accuracy First 12" Drill), the markers are short

horizontal hashes arranged in a "stair step" pattern above the reticle's main horizontal stadia. The vertical distance from

each marker down to the main horizontal stadia decreases by 0.1 mil as you move out away from the crosshair. See

Figure 13.

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Figure 13: The H59’s Speed Shooting Drop Markers decrease in height by 0.1 mils from one to the next, moving outward from reticle center.

Drop calculations have three variables: 1) distance to target, 2) mil-ed target size, and 3) real-world target size. If you

know any two of these variables, you can determine drop. The Speed Shooting Drop Markers rely on knowing real-world

target size and mil-ed target size, eliminating the need to know range. Hence, to place drop using the Speed Shooting

Drop Markers, you must know your target's real-world size.

The Speed Shooting Drop Markers work with targets of any fixed size, including 12”, 18”, and 24”. For the sake of brevity,

we’ll assume 12” targets in subsequent examples.

Match Target to Speed Shooting Drop Marker

Locate a 12" target, or 12" portion of your target. For example, a whitetail deer from belly-line to top of shoulders

measures approximately 12".

Find the Speed Shooting Drop Marker which most snugly brackets your 12" target's height. To do so, place your target's

bottom edge along the reticle’s main horizontal stadia and locate the marker which best matches your target’s height. If

the marker is too tall for your target, move outward to a shorter marker. On the other hand, if the marker is too short for

your target, move inward to a taller marker.

For our example: we'll assume our target is most snugly bracketed by the 0.8-mil tall marker (designated by the numeral

4). See Figure 14.

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Figures 14-15: This illustration depicts the process of matching your 12" target to the appropriate Speed Shooting Drop Marker. Figure 14: The 12"

target is too tall for the selected marker. Figure 15: So the shooter tries the next marker inward, finding a snug fit with the 0.8-mil tall marker (designated

by the numeral 4).

Place Corresponding Hold To place your corresponding hold, note the numeral designating the Speed Shooting Drop Marker which most snugly

brackets your target height. Divide that number in half. The resulting number is your corresponding drop mil line.

For example, if your target best fits the marker designated by the numeral 4, divide 4 in half for a drop hold of two mils (4 /

2 = 2 mils). Center your hold behind the two-mil drop line. See Figure 16.

Figure 16: This illustration shows the drop hold centered behind the 2-mil drop line, corresponding to a target best-bracketed by the Speed Shooting Drop Marker designated by the numeral 4.

Determine Gun Number Adjustment Each weapon system’s muzzle velocity and ballistic coefficient produce a different “Gun Number.” Depending on your

Gun Number, you may need to further adjust your drop hold. You’ll need to calculate this adjustment for each Speed

Shooting Drop Marker’s mil-ed height. By making these calculations before shooting, you can adjust your drop hold within

seconds in the field.

To begin, calculate actual drop holds required for 12" targets mil-ing at each of the following Speed-Shooting Drop Marker

heights: .8, .7, .6 and .5 mils. Your calculations must be specific to your weapon system. We recommend using Horus

ATrag ballistics software (http://www.horusvision.com/atragmx.php) for this process, but you can use traditional methods

as well. See Figure 17, Calculated Drop Hold column.

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Next, by adding the calculated drop hold to the Speed Shooting Drop Marker’s whole-number mil-height, you’ll determine

the Gun Number for each marker. To do so, remove the decimal from the Mil-ed Image Size column and add the resulting

whole number to the Calculated Drop Hold column. See Figure Y, Gun Number Calculation column.

Round to the nearest .5 to obtain the Gun Number for each marker. See Figure Y, Gun Number Rounded column.

Gun: MV = 2600, BC = .475      Atmosphere: Temp = 59°, BP = 29.53, RH = 78 

Speed Shooting Drop Marker 

Height 

Calculated 

Drop Hold  

Gun Number 

Calculation 

Gun Number 

Rounded 

.8 (designated by numeral 4)  2.52  8+2.52 = 10.52  10.5 

.7 (designated by numeral 6)  3.19  7+3.19 = 10.19  10 

.6 (designated by numeral 8)  4.17  6+4.17 = 10.17  10 

.5 (designated by numeral 10)  5.62  5+5.62 = 10.62  10.5 

Figure 17: Gun number calculations are shown here for an MV of 2600 and BC of .475. Gun numbers are derived from drop hold calculations and Speed Shooting Drop Marker heights.

For the vast majority of shooting scenarios, the Gun Number will be 9, 10 or 10.5. Figure 18 provides corresponding

Adjustment Values required for those most likely Gun Numbers. You’ll use this chart to determine the correct Adjustment

Value for your specific weapon system and target.

Gun Number Adjustment Values  

Gun Number  Adjustment Value  

9  1 mil up 

10  0 

10.5  0.5 mils down 

Figure 18: Chart provides Adjustment Values for likely Gun Numbers. These Adjustment Values pertain to all target sizes.

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Apply Gun Number Adjustment To apply the Gun Number Adjustment, simply adjust your hold up or down by the amount indicated in Figure 18.

Let’s consider our prior example: the target fit the Speed Shooting Drop Marker designated by the numeral 4, with a

corresponding hold on the 2-mil drop line. Referring back to the Gun Numbers calculated in Figure Y, we see our

example’s Gun Number is 10.5. Then, referring to Figure XX, we see the Adjustment Value for a 10.5 Gun number is 0.5

mils down. Hence, we adjust 0.5 mils downward from our 2-mil hold, for a Final Adjusted Drop Hold centered directly

behind the 2.5 mil drop line. See Figures 19-20.

Figures 19-20: This figure illustrates Final Adjusted Drop Hold for a 12” target matching the Speed Shooting Drop Marker designated by the numeral 4 (0.8 mils tall). This hold was determined by applying a .5-mil downward Gun Number Adjustment from the 2-mil drop line.

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0.9 and 1 Mil Exceptions Important Note: For targets mil-ing at 0.9 mils or 1 mil, it is not necessary to determine Gun Number Adjustment or

Adjusted Hold. As a rule, simply center the target behind the 1-mil drop line for targets best matching the 0.9 mil or 1 mil

marker. No calculations are required. See Figures 21-22.

Figures 21-22: The 1-mil drop line is the correct hold for targets matching the 0.9 and 1-mil Speed Shooting Drop Markers. Figure 21: A target matches the 0.9-mil tall Speed Shooting Drop Marker designated by the numeral 2. Figure 22: For final drop adjustment, the target is centered behind the 1-mil drop line.

Placing Holds Beyond 600 Meters

At distances out to approximately 600 meters, the Speed Shooting Method will place your bullet close enough to take out

your target. But beyond 600 meters, the algorithm will likely place your bullet too far off target for success. The Speed

Shooting Method isn't suited for precision fire at greater distances. For greater distances, we recommend using the mil

association method with the H59’s Standard Horus Grid. For more information, see this manual’s Standard Horus Grid

section or visit our Standard Horus Grid (http://osc.horusvision.com/standard_horus_grid.php) webpage.

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HOLDOVER DOTS

The H59’s Holdover Dots extend the Standard Horus Grid in 1 mil increments, providing more hold markings without

obscuring the view. Shooters gain clear uncluttered access to targets.

Figure 23: Holdover Dots extend the Standard Horus Grid in 1-mil increments.

Figure 24: A hold at 8 mils left is placed using Holdover Dots as guides. Note the extra clear target view.

STANDARD HORUS GRID

See this manual’s “Standard Horus Grid” section for more information and detailed instructions on using the Standard

Horus Grid.

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THE TReMoR2 RETICLE The TReMoR2 reticle is all about faster shooting. Advanced speed-shooting markers for wind and elevation are

strategically placed along drop lines, making adjustments even faster than the H59. And the TReMoR2 is a refined-mil

reticle, providing precision mil markings down to 0.1 mils throughout the reticle. In addition to these advanced features,

the TReMoR2 provides the Standard Horus Grid for traditional ranging and adjustment. Additionally, unobtrusive holdover

crosses extend the Standard Horus Grid while allowing for a clear uncluttered view.

Figure 25: The H59 reticle shown at high magnification (LEFT) and low magnification (RIGHT).

KEY FEATURES

Refined mil markers calibrated down to 0.1 mils. Versatile marker groupings for measuring targets occur

throughout the reticle.

Speed Shooting Drop Markers strategically placed along drop lines, for extremely rapid elevation adjustments.

Based on the Accuracy 1st 12” drill, markers eliminate the need to know range to target. Suited for targets out to

600 meters.

Drop line numbers 1-9 serve as 4-mph Moving Target Holds.

Speed Shooting Wind Markers strategically placed along drop lines, for extremely rapid windage adjustments.

Based on wind dispersion and time of flight, markers eliminate the need to calculate adjustment for different drop

lines.

Standard Horus Grid for windage and elevation adjustments. Use this to place holds for moving targets, windage

and bullet drop compensation. Suited for targets from 0-1500 meters.

Holdover Crosses extend the Standard Horus Grid in 1 mil increments, providing more hold markings without

obscuring the view. Shooters gain clear uncluttered access to targets.

Very fine reticle to aid in precise aiming at high power and distant ranges.

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Center crosshair turned into a "dot and broken cross" for un-obscured, refined aiming reference point.

Open field of view above center reticle for clear observation and spotting

Figure 26: Key features of the TReMoR2 are shown here.

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REFINED MIL MARKERS

Chevron Mil Markers

The TReMoR2 contains chevron patterns which subtend down to 0.1 mils. The uncluttered view enables the shooter to

measure down to .02 - .04 with ease. In total, three such chevron patterns occur in the TReMoR2 along the reticle’s main

stadia.

Figure 27. This illustration shows a TReMoR2 chevron pattern being used to mil a target at 0.4 mils, and at 0.09 mils.

Main-Stadia Mil Lines

The main stadia’s mil lines provide several means for refined mil-ing. Major hash marks intersect the reticle’s main stadia

in 1-mil increments. The lengths of these hash marks form a repeating pattern, growing from 0.5 mils, to 0.6, to 0.7, 0.8,

and 0.9. The pattern then reverts back to a 0.5-mil length, and starts repeating again. See Figure 27. These lines can be

used for mil-ing targets and to help keep track of mils while counting. Note that this pattern does not occur below the 10-

mil drop line in the Standard Horus Grid.

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Figure 27. This illustration shows a major hash mark on the reticle’s main stadia being used to mil a target. The height of the target precisely matches the 0.6-mil length of the hash mark.

Additionally, minor subtension lines intersecting the reticle’s main stadia are useful for mil-ing targets in two different

ways. Shooters can mil targets using the subtension line lengths, which vary from 0.2 to 0.3 mils. Or, shooters can mil

targets using the distances between a major hash mark and nearby subtension lines, measuring 0.2, 0.5 and 0.8 mils.

See Figure 28.

Figure 28. Minor subtension lines along the reticle’s two main stadia can be used to mil targets. Shown top right, a 0.8 mil target is measured using the distance between a major hash mark and minor subtension line. Shown bottom right, a 0.2 mil target is measured using a minor subtension line length.

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CROSSHAIR

The crosshair has a dot for refined holds and refined zero process. The sub tensions start out .5 mil to the left and right

for an uncluttered crosshair. The central dot is .05 mil and the main stadia lines stop 0.1 mils from the central dot.

Figure 29: TReMoR replaces crosshair with 0.05-mil dot and 0.1-mil gap for a clear uncluttered view.

MOVING TARGET HOLDS

The numbers identifying drop lines 1 - 9 are precisely positioned to double as 4 mph moving-target lead markers. These

numbers can be used for placing 4-mph moving target holds. For targets moving from the left, use the right lead markers

(see Figure 30); for targets moving from the right, use the left lead markers.

Figure 30. Shown here, the right drop-line number is used to place hold for a target moving at 4 mph from the left, with an assumed elevation correction on the 5-mil drop line.

SPEED SHOOTING WIND HOLDS

Drop lines 1 - 9 are primarily comprised of horizontally aligned wind markers, seven to the right and seven to the left of the

reticle’s main vertical stadia. Similar but smaller wind markers occur at the half-mil drop lines. While most of the wind

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markers are dots, note that on numbered mil lines the fourth marker from reticle center is a cross, providing a quick visual

reference point. See Figure 31.

Figure 31: Seven wind markers occur on each side of the reticle along drop lines 1 – 9, circled in red above. Similar but smaller wind markers occur along half-mil drop lines, visible here at the 3.5-mil drop line. Crosses designate 4th markers, making counting faster and easier, shown here on the 3 and 4-mil drop lines.

These wind markers represent wind holds. The speeds associated with the markers increase by a specific value from one

marker to the next, moving outward from reticle center. The specific value between wind markers depends on the ballistic

coefficient and muzzle velocity being used. Hence, different weapon systems have different wind marker values. For

example, a XM2010/M110 has a wind value of 4, resulting in the following speeds from center outward: 4 mph, 8 mph, 12

mph, 16 mph, 20 mph, 24 mph, ending at 28 mph. This differs from a XXXX/XXXX, where the wind value equals 3 mph,

for speeds of 3 mph, 6 mph, 9 mph, 12 mph, 15 mph, 18 mph and 21 mph. See Figure XX.

Figures 32-33: At left we see a wind value of 4 based on a XM2010/M110 weapon system, resulting in wind marker values of 4, 8, 12, 16, 20, 24 and 28 mph. At right we see a wind value of 3 based on a XXXX/XXXX weapon system, resulting in wind marker values of 3, 6, 9, 12, 15, 18 and 21 mph. By comparing the two, you can see that the markers are incremented by a different value depending on the weapon system being used.

It’s crucial to recognize that the wind speeds are the same for each drop line. For example, as Figure 32 shows, the third

wind marker speed equals 12mph for a XM2010/M110 weapon system regardless of which drop line it occurs on. This

means that no further calculations are required to place wind holds for different drop adjustments. Once you’ve calculated

your seven wind marker speeds, you can place wind holds instantly on drop lines 1 - 9.

Determine Wind Marker Speeds

Use any of the following methods to determine the wind value specific to your weapon system:

1) Kestrel with Horus

The Kestrel with Horus handheld unit combines ballistics software with advanced weather tracking. Look under the

Accuracy 1st option under target, then find the wind dot value. Visit http://www.horusvision.com/horus_kestrel.php for

Kestrel with Horus product information.

2) TReMoR Wind Dot Calculator

The Horus web site provides a free web tool for determining wind values, located at

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http://www.horusvision.com/tremor_wind_dot_calc.php. The tool calculates wind dot values based on weapon and

atmospheric data you provide.

3) Ballistic Solver

Alternately, you can use a ballistic solver to determine wind value. For example, first find the mil hold for a 20 mph wind

for a target on an even-numbered drop line. Look on the range card for an even number for elevation, then determine the

wind hold for a target of that distance. Say you find that on the 4 mil line, a 20 mph wind would require a 2.5 mil wind hold.

Next, draw a line from the main horizontal stadia’s 2.5-mil marker downward to intersect with the 4 mil drop line. Note the

number of wind markers between the intersection point and the reticle’s main vertical stadia, in this case 5. Finally, divide

the wind speed – in this case 20 mph -- by the number of wind markers you noted. The result, 4 in this case, is your

weapon’s wind value (20 mph / 5 wind markers = 4 wind value.) See Figure 33.

Figure 34: The Ballistic Solver method for determining wind marker values is illustrated for a 20 mph wind with a 2.5 mil wind hold and 4 mil drop hold. To determine TReMoR wind values, we divide the wind speed (20 mph) by the number of TReMoR wind markers (5, circled in green) which occur on the 4-mil drop line before the 2.5-mil wind hold: 20 / 5 = 4. Hence, 4 is the TReMoR wind value.

Once you’ve determined your wind value, you can quickly calculate all seven wind marker speeds. The first wind marker’s

speed is equal to your weapon’s wind value. To determine the next wind marker speed, simply add your weapon’s wind

value to the preceding marker’s speed. For example, a weapon value of 4 determines the first marker’s speed as 4 mph.

For the second marker’s speed, add 4 to 4 mph, for a value of 8 mph. For the third maker’s speed, add 4 to 8 mph for a

value of 12 mph. Applying this simple process to all seven wind markers would produce the following speeds from reticle

center outward: 4 mph, 8 mph, 12 mph, 16 mph, 20 mph, 24 mph and 24 mph. See Figure 32.

Place Wind Hold

Once you’ve determined the TReMoR2 wind values for your weapon system, you can make wind adjustments in seconds

regardless of distance. To adjust for wind, locate the drop hold line best suited to your target. Next, on that appropriate

drop line, locate the wind marker which best matches your wind speed, and place it over the target. For targets moving

from the right, use wind markers to the left of reticle center; for targets moving from the left, use wind markers to the right

of reticle center. For example, Figure 35 illustrates the hold position for a 16 mph wind from the right, XM2010/M110

weapon system, and 4.5 mil elevation adjustment.

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Figure 35: Shown here is a wind hold at the 4th marker on the 4.5-mil drop line, based on a 16 mph wind from the right, a XM2010/M110 weapon

system and resulting TReMoR wind value of 4.

Traditional Method for Placing Wind Holds

A mil grid is built into the TReMoR2 so shooters can hold off in mils rather than using wind markers for holds. Small

hashes forming a 1-mil grid are discretely placed along drop lines 1-9 for this purpose. See Figure 36. This mil grid is

continuous with the Standard Horus Grid below the 10-mil drop line.

Figure 36: Highlighted here in red, a subtle mil grid occurs from drop lines 1 – 9.

SPEED-SHOOTING ELEVATION HOLDS

The TReMoR’s main stadia incorporate the Accuracy 1st Speed Shooting Formula to help you rapidly determine an

elevation hold for your target without using the traditional mil relation formula for range-finding. This method works very

well for targets out to 600 meters.

As show in Figure 37, Speed-Shooting Drop Markers occur along the reticle’s main vertical stadia down to the 5-mil drop

line. You’ll notice that marker heights decrease by 0.1 mils from one drop line down to the next.

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Figure 37: Speed Shooting Drop Markers are embedded directly into the TReMoR2’s main vertical stadia from drop lines 1 - 5, providing a visual system for rapid drop adjustments for targets out to 600 meters. As shown in red, marker heights decrease by 0.1 mils from one Speed Shooting Drop Marker down to the next.

Drop calculations have three variables: 1) distance to target, 2) mil-ed target size, and 3) real-world target size. If you

know any two of these variables, you can determine drop. The Speed Shooting Drop Markers rely on knowing real-world

target size and mil-ed target size. They eliminate the need to know range by relying on knowing real-world target size

instead.

Hence, to place drop using the Speed Shooting Drop Markers, you must know your target's real-world size. For each

target size you choose to work with, you need to calculate drop holds corresponding to each marker's mil-ed height. By

doing this before shooting, you can place drop within seconds by seeing which marker most snugly brackets your target.

The Speed Shooting Drop Markers work with targets of any fixed size, including 12”, 18”, and 24”. For the sake of brevity,

we’ll assume 12” targets in subsequent examples.

Match Target to Speed Shooting Drop Marker

Locate a 12" target, or 12" portion of your target. For example, a whitetail deer from belly-line to top of shoulders

measures approximately 12".

Find the Speed Shooting Drop Marker which most snugly brackets your 12" target's height. To do so, place your target's

bottom edge along a drop line. If the marker is too tall for your target, move down to a lower drop line for a shorter marker.

On the other hand, if the marker is too short for your target, move up to a higher drop line for a taller marker.

For our example: we'll assume our target is most snugly bracketed by the marker on the 2-mil drop line. See Figure 24.

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Figures 38-39: This illustration depicts the process of matching your 12" target to the appropriate Speed Shooting Drop Marker. Figure 38: The 12" target is too tall to fit snugly within the 3-mil marker. Figure 39: So the shooter tries the next marker up, finding a snug fit with the 2-mil marker.

Determine Gun Number Adjustment Each weapon system produces a different “Gun Number.” Depending on your Gun Number, you may need to further

adjust your hold. You’ll need to calculate the adjustment required for each Speed Shooting Drop Marker's mil-ed height.

By making these calculations before shooting, you can adjust your drop hold within seconds.

To begin, calculate drop holds required for 12" targets mil-ing at each of the following Speed-Shooting Drop Marker

heights: .8, .7, .6 and .5 mils. Your calculations must be specific to your weapon system. We recommend using Horus

ATrag ballistics software (http://www.horusvision.com/atragmx.php) for this process, but you can use traditional methods

as well. See Figure 40, Calculated Drop Hold column.

Next, by adding your calculated drop hold to the Speed Shooting Drop Marker’s whole-number mil-height, you’ll determine

your Gun Number. To do so, simply remove the decimal from the Mil-ed Image Size column and add it to the Calculated

Drop Hold Column. See Figure 40, Gun Number Calculation column.

Finally, round to the nearest .5 to obtain your final Gun Number. See Figure 40, Gun Number Rounded column.

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Gun: MV = 2600, BC = .475      Atmosphere: Temp = 59°, BP = 29.53, RH = 78 

Speed Shooting Drop 

Marker Height 

Calculated Drop Hold   Gun Number 

Calculation 

Gun Number 

Rounded 

.8 (at 2‐mil line)  2.52  8+2.52 = 10.52  10.5 

.7 (at 3‐mil line)  3.19  7+3.19 = 10.19  10 

.6 (at 4‐mil line)  4.17  6+4.17 = 10.17  10 

.5 (at 5‐mil line)  5.62  5+5.62 = 10.62  10.5 

Figure 40: Gun number calculations are shown here for an MV of 2600 and BC of .475. Gun numbers are derived from drop hold calculations and Speed Shooting Drop Marker heights.

Figure 41 shows drop adjustments required for Gun Numbers. The vast majority of Gun Numbers will be either 9, 10, or

10.5.

Gun Number Adjustment Values  

Gun Number  Adjustment Value  

9  1 mil up 

10  0 

10.5  .5 mils down 

Figure 41: Chart provides Adjustment Values for Gun Numbers.

Apply Gun Number Adjustment Adjust your hold up or down as indicated by your Gun Number’s Adjustment Value in Figure 26. To do so, add your

Adjustment Value to the mil-line number on which your Speed Shooting Drop Marker rests. Then, center your target

directly behind the resulting drop line.

Let’s consider our prior example, where the target best fits the Speed Shooting Drop Marker on the 2-mil drop line.

Referring back to Figure 25, we see that the Gun Number for our Speed Shooting Drop Marker is 10.5. Referring to Figure

26, we see the Adjustment Value for a 10.5 Gun number is 0.5 mils down. Hence, we adjust downward from resting on

the 2-mil drop line, to centering our target directly behind the 2.5 mil drop line (2 mil line + 0.5 Adjustment Value = 2.5

centered hold). See Figure XX.

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Figure 42: This figure illustrates Final Adjusted Drop Hold for a 12” target matching the Speed Shooting Drop Marker resting on the 2-mil drop line. This hold was determined by applying a 0.5-mil downward Gun Number Adjustment.

Note that all targets must be centered behind drop lines. This means that zero Adjustment Values still require a slight downward shift from where the target’s base was resting on a drop line, to the target being centered behind the drop line.

Figures 43-44: Final holds must be centered behind mil drop lines. Figure 43: A target is shown snugly matching the .6-mil Speed Shooting Drop Marker on the reticle’s 4-mil drop line. Figure 44: Even though the corresponding Adjustment Value is zero, the final hold requires a slight downward shift to center the target directly behind the 4-mil drop line.

0.9 and 1 Mil Exceptions Important Note: For targets mil-ing at 0.9 mils or 1 mil, it is not necessary to determine Gun Number Adjustment or

Adjusted Hold. As a rule, simply center the target behind the 1-mil drop line for targets best matching the 0.9 mil or 1 mil

marker. No calculations are required.

Placing Holds Beyond 600 Meters

At distances out to approximately 600 meters, the Speed Shooting Method will place your bullet close enough to take out

your target. But beyond 600 meters, the algorithm will likely place your bullet too far off target for success. The Speed

Shooting Method isn't suited for precision fire at greater distances. For greater distances, we recommend using the mil

association method with the TReMoR2’s Standard Horus Grid. For more information, see this manual’s Standard Horus

Grid section or visit our Standard Horus Grid (http://osc.horusvision.com/standard_horus_grid.php) webpage.

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HOLDOVER CROSSES

The TReMoR’s Holdover Crosses extend the Standard Horus Grid in 1 mil increments, providing more hold markings

without obscuring the view. Shooters gain clear uncluttered access to targets.

Figure 45: Holdover Crosses extend the Standard Horus Grid in 1-mil increments.

Figure 46: A hold at 8 mils right is placed using Holdover Crosses as guides. Note the extra clear target view.

STANDARD HORUS GRID

As with all Horus reticles, the H50 contains an implementation of the Standard Horus Grid. In the H50, the grid is

calibrated in 0.5 mil increments. See this manual’s “Standard Horus Grid” section for more information and detailed

instructions on using the Standard Horus Grid.

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THE H50 RETICLE The H50 easily switches between eliminating close threats using the bold aiming ring, and engaging long-range targets to

600+ meters using the grid. It’s a versatile combination for incredible speed and distance advantage. Marks on the main

horizontal crosshair approximate leads for walking, running, and sprinting targets.

1. CLOSE RANGE: The Horus Talon presents a ‘bold ring’ with a central “crosshair”. It is best to use One power

(1x) to achieve the maximum field of view for targets at close ranges. At low power the bold ring is seen as a very large aiming circle while the central reticle virtually disappears. Illumination at low power can be varied from extremely bright for daytime use to minimal for limited visibility. The bold ring, vertical and horizontal stadia all illuminate fully.

2. MID-RANGE: When using the Horus Talon as a mid-range reticle, place the optic on Three (3x) or Four power (4x). The bold ring allows the eye to be quickly centered naturally on the reticle’s center and additional elevation aiming points will be visible below center.

Figure 47: The H59 reticle shown at high magnification (LEFT) and low magnification (RIGHT).

KEY FEATURES

Reticle hold points subtending to 0.5 mil for ease of use at 4x

12 mils of total elevation hold within the reticle

Heavy bold ring for rapid engagement of close targets

Open center for accurate aiming on small targets

Moving target measurements along horizontal stadia

Precise calibration of measurements to within 0.5%

Rheostat adjustable illumination of specific elevation hold points, bold ring and crosshair portions of reticle. Very

bright settings for fast engagement at low power

Rapid range-finding capability for personnel-sized targets

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Figure 48: The H59’s key features are shown here.

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BOLD AIMING RING

The H50 contains a large, bold aiming ring for quick target acquisition at point-blank range, assuring repeatable cheek

weld. At low power the bold ring is seen as a very large aiming circle while the central reticle virtually disappears. When

you bring your weapon up, your eye instantly sees the target and a bold ring: just put the target in the ring, and you’ve got

the shot. See Figure 49.

Figure 49: The H50’s bold aiming ring is shown positioned over a close-in target.

MOVING TARGET HOLDS

The H50 contains moving target holds along the main horizontal stadia. Each moving target hold consists of a number

paired with a short hash intersecting the main stadia (see Figure XX). The numbers represent target speed in miles per

hour (mph):

4 = 4 mph the speed of a man fast walking

8 = 8 mph the speed of a man running

12 = 12 mph the speed of a man sprinting

16 = 16 mph the speed of an APC

20 = (using the bold ring) 20 mph

To hold on a moving target, locate the numbered hold which corresponds to your target's speed and direction. Place it

directly over your target. To hold on a target traveling at a speed between markings (such as 5 mph), hold between the

even numbers on either side of it (4 and 6 mph). For leftward moving targets, use holds to the right of the main vertical

stadia; for rightward moving targets use holds to the left. To compensate for drop, adjust your hold downward in a straight

vertical line.

For example, Figure 50 below shows the H50 reticle being used to hold on a target moving at 8mph from the left, with a

4-mil downward elevation adjustment. The hold was initiated by placing the target directly behind the 8 mph moving target

hold, then repositioning straight downward to place the target’s center in horizontal alignment with the 4-mil drop line.

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Figure 50: Shown here is a magnified view of the H50 being used to hold on a target moving at 8mph from the left, with an elevation adjustment on the 4-mil drop line. The dotted red line indicates downward repositioning from the moving target hold to the appropriate drop line.

STANDARD HORUS GRID

As with all Horus reticles, the H50 contains an implementation of the Standard Horus Grid. In the H50, the grid is

calibrated in 0.5 mil increments. See this manual’s “Standard Horus Grid” section for more information and detailed

instructions on using the Standard Horus Grid.

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ADDITIONAL RETICLE FEATURES

Certain Horus reticles contain special features, including illumination, supplemental range finders, grey-light duplex stadia,

and the H50’s bold aiming ring.

ILLUMINATION

I need some guidance on this portion. How do want to discuss illumination and what to say about it? Does this belong in

the additional features section, in its own section, or should each reticle discuss illumination pattern? Or, does it more

correctly belong in each scope manual? Illumination is related to the reticle, but is not the reticle itself.

SUPPLEMENTAL RANGE FINDER

Although the Standard Horus Grid can be used for range finding in mils, some Horus reticles contain supplemental range

finders calibrated in English measuring units. The H25 and H425 rifle scope reticles each contain a supplemental range

finder calibrated in Shooter’s Minute Of Angle (SMOA). The H36 spotting scope reticle contains a supplemental range

finder calibrated in Inch Of Angle (IOA). One SMOA/IOA unit covers exactly 1 Inch at 100 yards.

For example, Figure 51 below demonstrates the H25’s supplemental range finder measuring a 24” target at 2 SMOA

units.

Figure 51: Close-up view of H25’s SMOA supplemental range finder in use. Target measures 2 SMOA units.

To determine range using an SMOA/IOA supplemental range finder, use the following formula:

Range = ( Actual Target Size SMOA Target Size ) 100

Here are our example's numbers plugged into the formula.

Range = ( 24 inches 2 SMOA ) 100 = 1200 yards.

Hence, for our example: range to target = 1200 yards.

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GREY-LIGHT DUPLEX STADIA

The H25 and H425 reticles feature bold duplex-style guides for grey light work. They occur along the reticle’s main

horizontal stadia, tapering to points near reticle center for a clear view. These guides are useful for demarking reticle

center in low-light situations when the Standard Horus Grid may not be clearly visible.

Figure 52: The H425’s duplex stadia are used to place center hold in grey-light conditions when grid lines become difficult to see.

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ADDITIONAL INFORMATION

 

Horus Vision reticles make the complex process of precision shooting faster and easier. From the point where you identify

a target, to the point where you follow-through to confirm the hit, there are several critical steps where Horus technology

makes a difference:

1. Ranging

2. Use of grid for holdover

3. Wind holds and/or moving target lead lines

4. Follow-through and Second Shot CorrectionTM

You can explore these steps in greater detail in the Horus Vision Tactical Manual. Please refer to it for proper application

of these steps.

For even greater accuracy, Horus ATragMX Ballistics Software can be used in combination with your Horus scope and

reticle. ATragMX lets you take combat-proven aiming solutions into the field so you are instantly ready for any shooting

conditions. Any mil-based reticle system is enhanced by the use of a ballistics program like ATragMX, but it is not

required. To learn more about the benefits of Horus Ballistics Software, see the ATragMX user’s manual.

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TECHNICAL DATA

STANDARD HORUS GRID Features:

Accurate range-finding to within 0.02 mil

Accurate elevation and windage hold or adjustment to within 0.01 mil

Eliminates the need to “dial in” elevation and wind adjustments for each shot

Rapid transition between targets at multiple ranges without changing cheek-to-stock “weld” or body position

Eliminates the need to view BDC (Bullet Drop Compensation) or target knobs by allowing continuous sighting

through scope

“Fail Safe” system for second shot correction of observed impacts

Shooter and spotter system for accurate talk-on to targets (when using Horus reticles in both rifle and spotting

scope)

Enhanced ability to self-spot for range-finding, windage, moving target leads and follow up shots

Grid Based on:

A circle = 6283 MILS

1 Mil = 3.60 in @ 100 yds

1 Mil = 3.438 inches @ 100 meters

1 Mil = 10.0 cm @ exactly 100 meters

Line Spacing: 0.2 mil between lines on most Horus reticles (0.5 mil on H50)

Both the range finder and the targeting grid are calibrated in USMC MILS

Reticle mil range: 8 mils (H425 reticle) to 42 mils (need someone to check this number for me and

change it to whatever the maximum amount of mils are available below center on any of the

currently available reticles. (H37, 38 and 39 reticles) below center, depending on specific reticle choice

WARNING: The 2% difference. When reading books and manuals, you must check and be sure that tables and

math formulas are specifically set-up for U.S. Marine Corps format. Do not use any data that is shown in U.S.

Army Mil DOT format. If you use this data in any calculation, you will pick-up a 2% error. The problem created by

this error becomes evident in ranges beyond 800 meters.

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Figure 53: Technical drawing with specs, of Standard Horus Grid as implemented in H25 reticle.

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Figure 54: Full view of the Standard Horus Grid as implemented in the H25 reticle.

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H59 RETICLE

Features:

Reticle hold points subtending to 0.2 mil for ease of use at 21x

42 mils (144 MOA) total elevation available at 3.5x; 8 mils (27 MOA) at 21x

Precise calibration of measurements to within less than 0.5%

Figure 55: H59 reticle technical drawing with specs.

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Figure 56: Full view of the H59 reticle.

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TReMoR2 RETICLE

38 mils (144 MOA) total elevation available at 3.5x; 8 mils (27 MOA) at 21x

Precise calibration of measurements to within less than 0.5%

Figure 57: The TReMoR2 reticle with specs.

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Figure 58: The TReMoR2 reticle with specs.

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Figure 59: Full view of the TRemor2 reticle.

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MORE TECHNICAL DRAWINGS The following technical drawings are available online in PDF format, suitable for zooming: These links are not working yet! Temporary place holders to indicate content. H37 full view .................. http:www.horusvision.com/img/h37_large.pdf

H37 specs ..................... http:www.horusvision.com/img/h37_spec.pdf

H425 full view ................ http:www.horusvision.com/img/h425_large.pdf

H425 specs .................. http:www.horusvision.com/img/h425_spec.pdf

H32 full view .................. http:www.horusvision.com/img/h32_large.pdf

H32 specs .................... http:www.horusvision.com/img/h32_spec.pdf

H36 full view .................. http:www.horusvision.com/img/h36_large.pdf

H36 specs .................... http:www.horusvision.com/img/h36_spec.pdf

H70 full view .................. http:www.horusvision.com/img/h70_large.pdf

H70 specs .................... http:www.horusvision.com/img/h70_spec.pdf

H50 full view .................. http:www.horusvision.com/img/h50_large.pdf

H50 specs .................... http:www.horusvision.com/img/h50_spec.pdf

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LEGAL NOTICE

HORUS VISION®, the EYE OF THE FALCON logo, 1ST HIT and 1ST HIT TECHNOLOGIES are registered trademarks of

Horus Vision, LLC and may not be used in any manner without express permission from Horus Vision, LLC. SECOND

SHOT, TACTICAL SOLUTIONS and TARGETING SOLUTIONS are trademarks of Horus Vision, LLC and may not be

used in any manner without express permission from Horus Vision, LLC.

Horus Vision software products and written and visual materials are protected by U.S. and international copyright

protection and may not be used in any manner without express permission from Horus Vision, LLC.

A wide variety of scopes, reticles, software, computer systems, and other products associated with shooting and ballistics

(“Horus Vision systems”) are exclusively owned by Horus Vision, LLC and are protected by issued patents in the United

States, including U.S. Pat. Nos. 5,920,995, 6,032,374, 6,453,595, 6,516,699 and 6,681,512, issued foreign counterparts,

as well as numerous additional pending patent applications in the United States and foreign jurisdictions, including, but not

limited to Europe, Japan, Israel, Canada and Australia. Manufacture, sale, importation or use of the Horus Vision systems

requires a license from Horus Vision, LLC. For more specific information on obtaining a license, please contact Horus

Vision, LLC.

Nothing contained herein should be construed as granting, by implication, estoppels or otherwise, any license or right to

use any Horus Vision, LLC intellectual property.

© 2011 Horus Vision, LLC. All rights reserved.

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CONTACT

Horus Vision, LLC 598 San Mateo Avenue San Bruno, CA 94066 Phone: 650-588-8862 Fax: 650-588-6264 E-mail: [email protected] Website: www.horusvision.com