Weihrauch HW45 Air Pistol

7/25/2019 Weihrauch HW45 Air Pistol

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Weihrauch HW45 Air Pistol

By Todd Cooper

The German made Weihrauch HW45 is an air pistol I had wanted for a very long time.After owning and shooting many Weley spring!piston air pistols and single stro"e

pneumatics# the time finally came to try the famous HW45 $%eeman P!& 'agnum(.%eeman refers to this pistol as )one of the most powerful spring piston airguns evermade*. The HW45+P!& is indeed a powerful pistol when compared to the other availalespring!piston choices.

I located a Weihrauch dealer in ,anada who stoc"ed the .-- calier HW45 $a"a P!&(and my order was placed. A wee" later the pistol was in my hands and ready for muchtesting# target shooting# and plin"ing. The .-- calier version is rated elow 5fps$&5-.4 m+s( and is not classed as a restricted firearm in ,anada. The velocity rating

from Weihrauch states &/ m+s# which converts to 4-0 fps. 1o pellet weight or energy ismentioned with this rating. The .- calier version# with a velocity rating of 5 fps# isalso acceptale as a non!restricted+non!registered firearm in ,anada. The moreplentiful pellet selection in .-- calier made my choice very easy.


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The HW45 is an over!lever design similar to the Weley Tempest# e2cept the arrel ishoused in an upper frame rather than standing alone. The coc"ing effort with the HW45is a it stiff ut I have no troule shooting & or more pellets in a session. The %eemancatalogue rates the effort at &3 pounds for the HW45+P!& and -5 pounds on theTempest.

The trigger on the HW45 is a two stage design that is adustale for weight. I have notyet tin"ered with the trigger on my gun ut it feels crisp and very acceptale. The datafrom the factory states a -3 o factory adusted pull weight out of the o2 ut my testingindicated /6.- ounces.

The grips panels on the HW45 are chec"ered walnut slas# fastened with two slotted

screws on each side. After mar"et ,olt &6&& type grips from Pachmayr and Hogue willfit the HW45 and are a welcome accessory to these pistols. Grips are also availalefrom %eeman and other various sources. Although the HW75+P!- pistol shares thesame standard grip as the HW45# the one!piece HW75 'atch Grip will not fit the HW45unless the grip shan" is shortened and drilled to accept a ottom fastener screw. TheHW75 pistol# with 'atch Grip# will have this alteration performed during the manufactureprocess.

Testing the velocity with the HW45 was an easy tas" ut accuracy testing was a it of a

challenge. 'any spring piston pistols often don8t perform well when shot off a sandagrest so I avoided the effort after an initial trial. I found that resting my forearms on a firmpillow and letting the pistol sit only in my hands wor"ed reasonaly well ut was still notthe est method for evaluating performance. This techni9ue does not give a totally clearindication of top accuracy potential. Plenty of unsupported offhand shooting was done toget an idea of the shootaility of this pistol. :rgonomics# alance# recoil# trigger feel# andshootaility can all e evaluated through offhand shooting. This type of shooting willshow how the gun functions without the aid of a rest.


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TOPICS OF INTEREST

$,lic" to follow(

History

Specifications

Velocity Ratings

Velocity Tests

Accuracy Tests

Mounting Optics

Power Parts - Seals & Springs

Disassembly an Tuning

Parts Diagram

Trigger A!ustment

S"ooting #"aracteristics

Temperature Sensiti$ity %ssue

H'( S"ooting Stories
http://my.tbaytel.net/coopers/HW45Review/review.html#_HISTORYhttp://my.tbaytel.net/coopers/HW45Review/review.html#_SPECIFICATIONShttp://my.tbaytel.net/coopers/HW45Review/review.html#_VELOCITY_RATINGShttp://my.tbaytel.net/coopers/HW45Review/review.html#_VELOCITY_TESTS_1http://my.tbaytel.net/coopers/HW45Review/review.html#_ACCURACY_TESTShttp://my.tbaytel.net/coopers/HW45Review/review.html#_MOUNTING_OPTICShttp://my.tbaytel.net/coopers/HW45Review/review.html#_POWER_PARTS_-_Seals_&_Springshttp://my.tbaytel.net/coopers/HW45Review/review.html#_DISASSEMBLY_&_TUNINGhttp://my.tbaytel.net/coopers/HW45Review/review.html#_PARTS_DIAGRAMhttp://my.tbaytel.net/coopers/HW45Review/review.html#_TRIGGER_ADJUSTMENThttp://my.tbaytel.net/coopers/HW45Review/review.html#_SHOOTING_CHARACTERISTICShttp://my.tbaytel.net/coopers/HW45Review/review.html#_TEMPERATURE_SENSITIVITY_ISSUEhttp://my.tbaytel.net/coopers/HW45Review/review.html#_HW45_SHOOTING_STORIEShttp://my.tbaytel.net/coopers/HW45Review/review.html#_SPECIFICATIONShttp://my.tbaytel.net/coopers/HW45Review/review.html#_VELOCITY_RATINGShttp://my.tbaytel.net/coopers/HW45Review/review.html#_VELOCITY_TESTS_1http://my.tbaytel.net/coopers/HW45Review/review.html#_ACCURACY_TESTShttp://my.tbaytel.net/coopers/HW45Review/review.html#_MOUNTING_OPTICShttp://my.tbaytel.net/coopers/HW45Review/review.html#_POWER_PARTS_-_Seals_&_Springshttp://my.tbaytel.net/coopers/HW45Review/review.html#_DISASSEMBLY_&_TUNINGhttp://my.tbaytel.net/coopers/HW45Review/review.html#_PARTS_DIAGRAMhttp://my.tbaytel.net/coopers/HW45Review/review.html#_TRIGGER_ADJUSTMENThttp://my.tbaytel.net/coopers/HW45Review/review.html#_SHOOTING_CHARACTERISTICShttp://my.tbaytel.net/coopers/HW45Review/review.html#_TEMPERATURE_SENSITIVITY_ISSUEhttp://my.tbaytel.net/coopers/HW45Review/review.html#_HW45_SHOOTING_STORIEShttp://my.tbaytel.net/coopers/HW45Review/review.html#_HISTORY


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)re*uently As+e ,uestions

HISTORY

The HW45+P!& was orn from the design of the %eeman importing company along withthe engineering and manufacturing of the Weihrauch company. The close resemlanceto the ,olt &6&& frame shows the definite American touch. ,olt &6&& after mar"et gripseven fit the P!& frame# which was a very nice option to incorporate into this pistol.

When this pistol is sold through %eeman dealers it is laelled as the P!& 'agnum utwhen sold y Weihrauch dealers the lael on the left side of the frame says HW45. %othlaels have een availale since the &635 origin and %eeman catalogue ;&-.

In &66- %eeman offered a limited edition P!& with a duo!tone lac"+silver finish anddelu2e rosewood grips# inset with the - thanniversary medallion $&7thedition catalogue(.This special collector


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HW45 is still availale as a Weihrauch lael with plain lac" grip panels $in all /caliers(.

In earlier years %eeman offered the P!& in .&77# .- and .-- calier versions. The .--calier version seemed to e dropped from the %eeman line around &664 ! 65 with theprinting of the &6thedition catalogue. The .-- version has always remained availale inthe HW45 lael.

=ne of the first prototypes of the P!& 'agnum pistol was the HW75 $%eeman P!-(single stro"e pneumatic pistol. This pistol did not deserve the title )'agnum* ut wasmar"eted as a recoilless match pistol with firearm styling. The HW75+P!- is very similarto the P!& on the e2terior# e2cept for the larger functional hammer and the small frame

release utton. The interior has completely different components along with a moresensitive trigger unit.

SPECIFICATIONS

=verall >ength &&.*


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%arrel >ength 0.7*

?ifling &- grooves

,aliers Availale .&77# .-# .--

Weight - ls 3.3 o

?ear @ight adustale for elevation and windage

@ight ?adius 6./3*

@cope Groove 5.&* of usale length

Grips Walnut

%eeman ?ated Accuracy .&77 calier ./*#

.- calier ./&*#

.-- calier .4*BB

Celocity ?atings see list elow

@afety manual lever type

BB %eeman rated accuracy is )est / shot center!to!center group recorded at & meters*


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VELOCITY RATINGS

W:IH?AD,H ,ATA>=GD: $-4(

.&77 calier HW45 553 fps

.- calier HW45 availale ut no data listed

.-- calier HW45 4-0 fps

%::'A1 ,ATA>=GD: ;&3 $&66/!64(

.&77 calier P!& 0 fps 5.- fpe

.- calier P!& 5 fps 5.5 fpe

.-- calier P!& 45 fps 5.7 fpe

%::'A1 ,ATA>=GD: ;&6 $&664!65(

.&77 calier P!& 0 fps 5.& fpe

.- calier P!& 5 fps 5.& fpe


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.-- calier P!& no longer imported

%::'A1 ,ATA>=GD: ;-# ;- ;--

same numers as ;&6 catalogue

%::'A1 ,ATA>=GD: ;-/ $-/(

.&77 calier P!& 0 fps 5./ fpe

.- calier P!& 5 fps 5.43 fpe

I wonder why %eeman reduced the rated energy output form &66/+64 to &664+65 andthen increased it again in -/. Weihrauch8s and %eeman


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The fastest pellet tested was the &-.&gr ?W@ Hoy with an average velocity of 43- fpsand 0.-4 fpe of energy. The &/.6 gr ?W@ 'eister"ugeln was pushed out at 443 fpswhich produced 0.- fpe. Here is a sample velocity series during the first few testsE

%eeman FT@ &4.6 gr 4-6# 4--# 4&6# 4/# 4/- Ave 4-0 fps : 0. fpe

After appro2imately -5 pellets my .-- calier HW45 seems to have settled down to aslightly lower and more consistent velocity output. :nergy output is now 5.0 to 5.3 fpe.

The Hoy pellet now averages 40& fps and the 'eister"ugeln does 4// fps. A samplevelocity test.E

%eemanFT@

&4.6 gr 4&6# 4&0# 4&4# 4&/# 4&7 Ave 4&0 fps : 5.7 fpe

The gun lost aout 5 energy# which is nothing to really e concerned aout. With a

future moly lue treatment I may even get this power ac" again. Celocity averages arenowE

?W@ Hoy &-.& gr 40& fps

?W@'eister"ugeln

&/.6 gr 4// fps

,rosman W, &4./ gr 4-3 fps

%eeman FT@ &4.6 gr 4&0 fps


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I have now put over /5 pellets through the HW45 and velocity is still stale. Wa2edpellets $Pledge furniture polish( have een used for the last couple of shooting sessionsand accuracy is aout the same. ,hronograph results wereE

%eeman FT@ &4.6 gr 4&0# 4-/# 4&0 4-/# 4&7 Ave 4&6 fps : 5.3 fpe

'y ne2t chronograph testing was after more than 0 pellets and velocity seems tohave stailied and has not changed in the last - pellets. This new tin of FT@ pellets

seem to e a little lighter than the previous two tins $&4.5 vs &4.6(. The results wereE

%eeman FT@ &4.5 gr 4/5# 4/# 4-7 Ave 4/& fps : 5.63 fpe

?W@ Hoy &-.& gr 47-# 47-# 47 Ave 47& fps : 5.60 fpe

As a final addition I tested the HW45 after more than / pellets have een fired. Theonly thing I have done to this pistol since it was purchased was add a few gos of%eeman8s '-' moly paste to the mainspring# through the coc"ing arm slots. 'oly wasalso applied to the hinge pivot pin and the feet on the ends of the coc"ing arms. ?esultsof the velocity test wereE

%eeman FT@ &4.5 gr 4/-# 4/ 4/# 4-3# 4-3 Ave 4/ fps : 5.65 fpe

?W@ @uper!H!Pt &4.5 gr 4/# 4-6# 4-6# 4-6# 4/- Ave 4/ fps : 5.65 fpe

?W@ Hoy &-.4 gr 40/# 405# 40-# 40-# 40& Ave 40/ fps : 5.6 fpe


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Note:The Hoy pellets used in the last velocity test were from a different tin $differentlot ;( with a slightly heavier weight. The FT@ pellets in the last test were from a differentlot numer with a slightly different weight. The correct weights were used in the energycalculations.

The mainspring and piston seal were changed after 75 pellets# due to a temperaturesensitivity issue. The new parts made the pistol a lot less affected y cool temperatures.The original mainspring is still usale so I will "eep it as a spare ut the original seal

was the cause of the prolem and was damaged during removal.

The new mainspring has shot aout - pellets and is functioning fine. &4.5 grain%eeman FT@ velocity results wereE

%eeman FT@ &4.5 gr 4&/# 4&0# 4&5# 4&/# 4&5 Ave 4&4 fps : 5.5- fpe

This is a little lower than previous numers ut the pistol is now shooting very lean $nosmo"e(. A little more velocity could li"ely e had y adding a few drops of spring oilthrough the coc"ing slots# as recommended in the %eeman P!& owner


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After - pellets I am still getting the aove results. :very few months the velocitystarts to drop 5 to & fps ecause the oil has een used up. The pistol re9uires this fuelfor top performance. Applying a few drops rings things ac" to normal again.

A couple of months after I purchased my .-- calier HW45 a shooting friend purchaseda duo!toned .-- calier HW45. He preferred a .&77 calier pistol so an e2tra arrel wasordered through %eeman and installed. After adding some moly to the mainspring I wasale to orrow the pistol for a wee"end to perform velocity tests for comparison to my .

-- calier version.

The elow numers were achieved when my pistol was new and powered y theoriginal seal and spring.

HW45 VELOCITIES (.177 !"#

Pellet Grain Feet per second Average Foot ls energy

,rosman Premier 7.6 5/7# 5/6# 5/3# 54-# 5/0 5/3 5.3

H1 @ilverpoint &&.5 447# 40# 450# 447# 456 454 5.-0

H1 Finale 'atch 7.7 506# 57-# 57# 507# 503 506 5.54

%eeman ,row 'ag 3.3 5&/# 53# 55# 5# 57 57 5.-

?W@ 'eister"ugeln 3./ 547# 5//# 54# 5/7# 5/4 5/3 5./4


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?W@ @uperpoint 7.6 545# 555# 546# 543# 55- 55 5./&

?W@ Geco 0.3 56/# 56/# 535# 56 56& 56& 5.-3

?u"o 'ag II 3./ 5-0# 5- 5/0# 5/-# 5-5 5-3 5.&4

HW45 VELOCITIES (.$$ !"#

Pellet Grain Feet per second Average Foot ls energy

,rosman Premier &4./ /67# 44# /60# /60# /6/ /67 5.&

%eeman FT@ &4.6 4-0# 4-3# 4-5# 4-5# 4-5 4-0 0.

%eeman Trophy &4. 4/# 4//# 4-3# 4/# 4-5 4-6 5.7-

?W@ @uper!H!Point &4.5 4/5# 4/3# 4/4# 4/-# 4/7 4/5 0.6

?W@ 'eister"ugeln &/.6 4/6# 4/3# 4/0# 4//# 44 4/7 5.6

?W@ Hoy &-.& 47-# 47-# 47 47& 5.6

H1 'atch &/.75 4/6# 4/6# 44/# 446# 445 44/ 5.66

Gamo 'atch &4./ 44# 4/0# 4/# 4/-# 4/- 4/4 5.63


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, %o2er &/.6 4//# 4/-# 4//# 4/4# 4/0 4/4 5.3-

Notes

did not have enough .-- Hoy pellets to test 5 shots

the .-- cal ,Ps were a very loose fit which may e the cause of the low velocity

the .&77 cal ,Ps were a snug fit

ACC%RACY TESTS

For accuracy testing I performedE offhand shooting using an isosceles stance# shootingwith my forearms supported y a padded rest# and also shooting from a mechanicalrest.

Testing a recoiling spring pistol for accuracy can e a it difficult ecause the groupsecome erratic if the gun contacts any firm surface during the firing cycle. Freely holdingthe pistol seemed to give a good indication of the pistol


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another five shot group using ?W@ Hoy pellets and it was my est at slightly over &Jctc.

S)ppor+ed Gro)p*

1e2t I used a pad rest to support my forearms while I shot a few more 5 shot groups at& metres. The %eeman FT@ pellets made a nice /+4Jctc group and ,rosman W,swent into &Jctc. With the ?W@ 'eister"ugelns and , %o2er pellets I pulled one shot ineach 5 shot group. To e sure it was ust my error# I shot a 0th pellet# which went rightinto the main group cluster oth times. With the 5 good pellets counting# the 'eistersand %o2ers shot 7+3J and /+4J ctc respectively.

The est rested 5 shot group of the day went to the ?W@ Hoy pellet# a eautiful6+&0J ctc group that could e covered y a 9uarter. =verall I feel the HW45 is an

accurate springer pistol. With an optical sight and a etter shooter this gun should ecapale of consistent cloverleaf groups at & meters.

,ore O&&'!d Gro)p*

=n the ne2t testing day I shot a unch more offhand groups with the HW45. I amamaed at how easy this springer pistol is to shoot at & metres# compared to the manyWeley8s I have owned. All groups were measured with a ruler for center!to!center $ctc(group sie. All groups were shot offhand with a two hand isosceles holdE

%eeman FT@ 5 shot group &J ctc

%eeman FT@ & shotgroups

& &+4J# & &+4J# & /+3J# & /+3J# & 5+&0J# & /+3J# & &+4Jctc

, %o2er & shots -J ctc

,rosman W, & shots & 5+3J ctc

H1 'atch & shots & &+4J ctc


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O&&'!d S'oo+- A+ Loer /-*+!e*

1e2t was offhand shooting at longer distances using tin cans as targets. I measured off

-# -5# /# and 4 yards with my tape and then tin cans were placed at these distances.Appro2imate tin can sies areE

,ampell8s @oup ,an & o ! -34 ml -.7JKia. 2 /.6JH

Hein %ean ,an &4 o !/63 ml /.JKia. 2 4.4JH

Hunt8s Pasta @auce,an

-- o ! 03 ml /.4JKia. 2 5.7JH

>arge ,offee ,an & "g! -.- ls 0.&JKia. 2 0./JH

'y .-- calier HW45 now wears a 'illet @P!& red dot# secured with Lwi"!@ite mounts.

The red dot helps with long distance aiming and does not magnify any shooter8s wole.The small / moa dot sie helps with any needed holdover estimates

The day was very right so intensity setting numer 3 was used on the 'illet. This reddot has && intensity levels to choose from and I always opt for the lowest possilesetting for the availale lighting. @etting numer - or / wor"s fine for indoor shooting.

%eeman FT@ pellets were used for all of today


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All distances were measured with a & foot tape. All shooting was offhand using anisosceles hold.

Results

- yds ,ampell8s @oup ,an 6+& hits &+& hits

-5 yds Hein %ean ,an &+& hits 3+& hits

/ yds Hunts @auce ,an 3+& hits &+& hits

4 yds >arge ,offee ,an 3+& hits 3+& hits

4 yds Hunt8s @auce ,an 0+& hits 5+& hits 0+& hits

Penetration

$0 y!rd*! usually penetration through oth sides of can

! can falls and often flips

$5 y!rd*! usually a slot is ripped through one side of can

! can falls over

0 y!rd*! a deep dent in can

! can falls over if hit solidly

40 y!rd*! ,offee can does not fall over

! Hunt8s can will often fall over if hit solidly


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Notes

too" several sighter shots prior to scoring at each distance

there was a slight reee when shooting ut nothing e2treme

all measurements were doule chec"ed prior to leaving the shooting area

all shooting was carefully documented

,e'!-!" A)r!y

Testing the HW45 in a machine type rest is a difficult process due to the coc"ing cycleand the pistol8s recoil. I decided to give it a try even though the results will not li"ely e& perfect. Kuring this test I removed the grip panels and clamped the HW45 into a%lac" and Kec"er Wor"mate. For every shot the gun was removed and coc"ed andthen returned to the clamped position. ,are was ta"en to re!align the 6 power %ushnell@portsman scope for every shot. All groups were 5 shots each and measured center!to!center with a ruler and recorded to the nearest si2teenth of an inch. The averages wereconverted to decimal for ease of comparison.

10 metreAccuracy

%eeman FT@ &&+&0# &+-# /+3# 6+&0 Ave .5/J

?W@ Hoy 5+3J# 5+3J# 5+3J Ave .0/J BB

?W@ 'eister"ugeln 5+3J# /+4J# /+4J# &+-J Ave .00J

%eeman Trophy &J# /+4J# /+4J# 5+3J Ave .73J

Gamo 'atch & &+&0J# 6+&0J# &J# & /+3J Ave &J


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20 yardAccuracy

?W@ 'eister"ugeln 7+3J# & &+3J# & 5+3J Ave &.-J

%eeman FT@ & /+4J# & /+4J# 7+3J# 7+3J Ave &./&J

BBI ran out of Hoy pellets so I could not shoot 4 groups

There was an annoying wind present when the - yard shooting was performed whichmay have affected the group sies a it.

=verall I thin" the .-- calier HW45 is li"ely capale of a it less than &+-J groups at &meters $5 shot( and close to &J groups at - yards# if a etter vice was used on a deadcalm day. The Wor"mate is not the most stale system to use ut it8s all I currently have.

Ve"o-+y2A)r!y S)33!ry

We all "now %eeman uses the lightest pellet for their velocity testing. Their statedvelocity for the .-- calier P!& is 45 fps and their stated energy rating is 5.7 fpe. 'yHW45 still seems to e shooting perfect with over 45 fps using &&.6gr Hoy pelletsand producing 5.7 fpe with various pellets.

'y average accuracy with the favoured pellet is .5/J for 5 shot groups at & metres.%eeman uses / shot groups at the same distance and they state .4* ctc accuracy. 'yaccuracy seems aout the same as that found y %eeman.

=verall I found this particular HW45 to e very comparale to the printed %eeman data.


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,O%NTING OPTICS

'ounting optics on the HW45 can e a it frustrating unless the correct mount is used.For some reason Weihrauch decided not to use the standard && mm dovetail groovesie. The groove on my pistol measures &- mm wide and I have contacted a few HW45and P!& owners and found their grooves are also the same. This is a smallinconvenience ut there are solutions.

The first mount I tried on my HW45 was a one piece @portsmatch =P-5, $also "nownas %eeman 54(. This mount was designed for an && mm dovetail so the clamp wouldnot sit properly with the &- mm groove. The mount was also offset ecause the clamp isonly on one side of the ase. This was the strongest mount I owned and I wanted to useit with my %ushnell @portsman /!6M scope for accuracy testing. As a temporarymeasure I shimmed the 4 clamp screws with washers and this allowed a stale utoffset scope set up to e used. As long as things were tight I could still test the HW45for group sies.

A pair of %urris rimfire mounts# and the mounts included with my @portsman scope#were also tried ut neither would clamp firmly on the &- mm groove. A cheap / mm,hinese mount was also tried with no success.


21/58

The easiest way to mount optics on the HW45 is with vertically split mounts or mountswith claws on oth sides. %oth types wor" fine.

The vertical split mount allows the optical sight to e centered rather than eing offset toone side. This is the type of mount I use for my 'illet @P!& red dot. %efore clamping

onto the sight


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POWER PARTS 2 Se!"* Spr-*

Parts dimensions can sometimes e interesting information for some people.

Or--!" &!+ory p!r+* d-3e*-o*

'ainspring length 6.J

'ainspring diameter .05/J

'ainspring coil thic"ness .64J

'ainspring coil count /4 $counting the ends(

@pring guide length /./45J


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@pring guide diameter .443J

Piston length /.3-5J $with seal(

Piston diameter at s"irt .353J

Piston diameter at middle .30J

Piston diameter ehind seal .30&J

Piston seal diameter .306*

Piston seal thic"ness .-/7J

Piston weight /.0o $4.4o with top!hat+spring!guide(

The power stro"e was measured at appro2imately -.-5J.


24/58

A) $00

A new HW45 mainspring and piston seal were purchased.

'ainspring length 6.J

'ainspring diameter .05&J

'ainspring coil thic"ness .6/+.64J


Piston seal diameter .306J

)"y $004

A second new mainspring and piston seal were purchased.

'ainspring length 6.4*

'ainspring diameter .05/*

'ainspring coil thic"ness .64*


Piston seal diameter .3065*


25/58

,!-*pr- L-&e

There have een rumours of the HW45 having a short mainspring life due to the high

stress this spring e2periences. ?ather than disagree I decided to "eep trac" of pelletsshot with one of my mainsprings. After 75 pellets it had only lost aout & fps ofvelocity ut still gave consistent readings. The spring was changed to gather more testinformation ut it was saved for a spare. 'y current mainspring has slightly over -pellets on it as of Ouly -4 and it still function wonderfully.

For more data I searched the %ritish %%@ Forum loo"ing for HW45 postings. There werea few owners who e2perienced spring rea"age or e2treme wea"ening at to&-# pellets. I could not find any comments for prolems with less than shots.

Bree' Se!"

The reech seal on the HW45 is a nitrile ;6 o!ring. These seals can often e found athydraulic supply dealers.

%efore eing told aout the proper o!ring sie I tried several different seals that werelocally availale. First was a 7+/-JIK 2 &+&0J thic" @tandard o!ring and it fit the sealgroove ut was a little too thin to provide a perfect contact with the arrel. Celocity was

a it low with this o!ring. Then I tried a 5mmIK 2 -mm thic" metric o!ring and it also fitthe groove ut was very snug. The arrel was difficult to close with the -mm thic"nessand velocity was erratic. Finally# I tested the ;6 nitrile o!ring $.-3JIK 2 .7J thic"(and it wor"ed great. 'y tested velocity with this seal is the same as with the originalfactory seal and after many months it still seems to e lasting fine.


26/58

6)!d Se!"

The 9uad seal was something that was mentioned on the Airgun Forum. I had never

heard of these seals efore ut a trip to a local gas"et seal dealer put several in myhand. The 9uad seal has a non!rounded surface# which might give a etter air tight seal.

A unch of pellets were shot through the HW45 to warm things up. Celocities were goodso the test started.

%eeman FT@ pellets were used for the testing. This is the same as the H1 FTT pellet.

'y HW45 is running a it lean right now so velocity is in the 4&5 fps area. If I add acouple of drops of acceptale fluid lue onto the spring I usually get in the 4-s with thispellet. A lean urn is fine for me so I left the pistol alone.

;6 1itrile =!?ing 4&7# 4&/# 4&5# 4&0# 4&5 Ave 4&5 fps

;6 1itrile uad @eal 4&6# 4-5# 4&3# 4-# 4&/ Ave 4&6 fps

;6 1itrile =!?ing 4&6# 4&7# 4&/# 4-# 4&/ Ave 4&0 fps

;6 1itrile uad @eal $;-( 4&/# 4&4# 4-# 4&7# 4&6 Ave 4&0 fps

I let the pistol rest for almost an hour. This sometimes gives me a few fps ut no maor

increases.

;6 1itrile uad @eal $;-( 4&6# 4-# 4&3# 4&3# 4&3 Ave 4&6 fps


27/58

;6 1itrile =!?ing 4&6# 4&7# 4&3# 4&6# 4-& Ave 4&6 fps

Co")*-o*

the o!ring and 9uad seal give the same velocity results

once the reech seal settles# the velocity ecomes very consistent with either seal

a dry pistol $no li9uid lue( has a very lean urn and slightly less velocity than a welllued pistol

/ISASSE,BLY T%NING

There are a few tric"s to disassemling the Weihrauch HW45 pistol. I have instructionsfrom the Col./# 1o.4 April &660 Airgun >etter and have done the complete procedureseveral times on my own pistol. This is a good AG> issue to purchase if you have a

chance. It also has an article on the 'ac!& >K pistol.

/-*!**e3"y Proed)re

Qou will need pin punches# plastic hammer# -.mm and -.5mm he2 wrenches# a paperclip# and rags.


28/58

1! ?emove the grip panels.

$! Put the end of a paper clip through the hole in the lower end of the safety rod $part;304&(. This is the hole you will see in the rod that pops through into the lower cavity inthe grip. Qou will only see the end of a set screw and this rod stic"ing into the lower grip

cavity. Put the paper clip through the hole and leave it there so the rod will not moveupon disassemly+re!assemly of pistol. The upper frame must e closed $latched shut(to get the rod into position to see the small hole.

! >oosen# ut donetter author uses for theHW45 spring compressor. Tom used a Cise!Grip rand &-J$/mm( model 5&-.When using this unit# ma"e sure you support the side of the cylinder when tapping outthe cross pin $;36-(.


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Tapping the Cise!Grip lever will allow the HW45 mainspring to e decompressed slowly.>ight taps with a hammer wor" to achieve this oective.

=ne of the soft end pads on the clamp should e notched to receive the mainspringcylinder proection. This is the little spring loaded lever that is located at the ottom ofthe cylinder# at the rear.

A 5J piece of vinyl tuing $&. !&.-5JKia( can e used as a sleeve to slide along themainspring as it decompresses. This gives added resistance to side pressure for safetyreasons. The sleeve can e slid over the cylinder and moved down as the spring isslowly decompressed.

I do not use the Cise!Grip clamp when wor"ing on the HW45 ut sometimes an e2traset of hands is useful when a compressor is not used. When re!installing the mainspringI prefer to use a rod as a guide. The rod can e a large nail# a section of a allpoint pentue# or whatever fits. The pen tue $rod( wor"ed fine for me. I insert the short rod intothe end cap $;640-( when I push down on the cylinder during spring insertion. The rodhelps prevent the spring from uc"ling. The end cap pin $;36-( can only e pushedpart way until it hits the rod. =nce the end cap pin is partially in place the rod can eremoved and the pin inserted completely. The length of this rod cannot e too long or itcontacts the spring guide when the spring is compressed. Appro2imately 5cm to 7cm

wor"s fine for a rod length.

If you want to remove the piston you need to e careful not to damage the seal on theinside edges of the coc"ing slots or the holes at the end of the cylinder. If you plan onreplacing the seal then you have no worry with removal.

The piston seal is carefully pried off using the two slots in the piston# located ehind the

seal. A small slotted screwdriver wor"s fine for this tas" ut often results in a damagedand non!reusale seal. I would not recommend removing the seal unless replacement isplanned.

'a"e sure there are no urrs on the inside of the coc"ing arm slots. ,arefully removeall urrs prior to piston installation.


30/58

L)e T)e

I do not recommend a complete disassemly on a new or fairly new HW45. If the pistol

is giving decent velocity the parts are li"ely wor"ing fine and don8t need replacing. Aasic lurication is all that is needed.

Here is the process that I use for the HW45 %asic >uricationE

1! =pen the reech ut do not coc" pistol.

$! >oosen the -.mm allen screw that secures the arrel pivot pin. The screw is locatedelow the mule# under the frame.

! Push out the pivot pin $part ;30&(.

4! @lide the coc"ing arms to the rear of the slot where they can e wiggled out. Ko notpull up on the upper frame when sliding the arms. Qou will have to slide the upper framerearwards ecause the arms will e caught in the slots and should not e forced.

5! Dse an opened paper clip or toothpic" to apply moly paste to the coc"ing slotsides+edges.

8! Apply two small gos of moly lue onto the visile spring coils and into the spring

centre# using the paper clip. Two gos aout the sie of the eraser on a pencil is all thatis needed.

7! Attempt to loosen the -.mm set screw that secures the upper end of the coc"ingarms to the upper frame. If it is too tight# don8t other.

9! If the screw loosens you can slide out the pin and moly lue the pivot holes in thearms and also the pin efore re!assemling.

:! If the screw doesn8t loosen you can apply some pellgunoil to the pivot area or ami2ture of pellegunoil and moly paste. Krip a little it into the pivot pin area.

10! Apply moly paste to the feet on the coc"ing arms $ent ends(.

11! Wipe down arrel and e2terior of compression tue with a very very light coat ofpellgunoil or /W!1K motor oil or a favoured oil.

1$! Apply moly paste to the arrel pivot pin and friction points of the hinge.


31/58

1! ?e!assemle pistol.

14! The arrel can e cleaned with soft cotton patches and a pull!through made fromfishing line or weedwac"er cord. Ko not use rushes or metal rods in your airguns. A itof @imple Green or GooGone can e used to wet patches. Kry patches should follow.

A new HW45 will smo"e a it when shot. This smo"e will diminish ut will not go awaycompletely. This pistol urns rich compared to many other springer airguns. A littlesmo"e is fine ut detonation is not fine. Qou don8t want the loud detonation soundaccompanied y e2treme velocity readings.

The aove lurication process should last at least 5 pellets# maye longer. As an

option# you may also apply -!/ drops of spring oil onto the mainspring to thin the molypaste luricant.

Co3p"e+e L)e T)e

,lean off all the factory luricants from the cylinder# piston# and mainspring. ,leancotton cloths and a synthetic tipped cleaning rod wor" fine for this tas". %efore luingand re!assemly# I polish the HW45 mainspring ends with emery paper $3!&5!-4!/- grit( and clean it thoroughly.

=ver luing the HW45 will slow it down. Kon8t use heavy spring tar or mainspringdampening compounds if you want top velocity. Dsing these products will help eliminatevirations when velocity is not a concern.


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'ost tuners will apply a thin coat of moly paste to the outer perimeter of the seal and a&J and ehind the seal and at the piston s"irt. The HW45 has a straight walled pistonso I prefer to apply a thin layer to the entire ody $insideout(. Kuring re!assemly Iapplied %eeman8s '-' moly paste toE piston seal perimeter# piston ody e2terior# insidepiston# mainspring# mainspring ends# spring guide# coc"ing arm JfeetJ# pivot pins and

hinge# loading latch hoo". I also urnish a small amount of moly into the chamer andremoved e2cess.

PARTS /IAGRA,


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34/58


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TRIGGER A/%ST,ENT

'y trigger pull was very sweet# right out of the o2# so I left it alone. It has no creep andwas factory set to a light weight. I didn


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SHOOTING CHARACTERISTICS

'any shooters ecome unhappy with the shooting ehaviour of the HW45 pistol. Thepistol does recoil and re9uires a special approach for top accuracy potential. Ignoringthe recoil ehaviour will often lead to frustrations.

I spent some time testing the P=I change with the HW45 using grip pressure changes.All my shooting was done indoors from & meters using an offhand isosceles hold. Allthe & shot groups were measured center!to!center.

The first group was shot using a firm hold on the pistol. This is the type of hold used ona real powder urning .45A,P. A firm# controlling grip. The group printed low on theullseye and formed a & 5+&0Jctc group.

The second group was shot with a moderate hold. The pistol8s grip was firmly pushedinto the we of my right hand and the fingers were wrapped loosely around the front ofthe grip. The group measured & /+3Jctc. The P=I was /+4J higher than the firm holdgroup.

The last group was shot with a very loose hold on the pistol. The ac"strap on the gripwas arely touching my hand. 'y fingers were loosely wrapped around the front of thegrip and the pressure was not even enough to fully compress the pads on my fingers.

The group measurement was & &+4Jctc. When using this type of hold the P=I shiftedupwards - &+4J from the moderate hold grip.

I am right handed and I grip a pistol with my right hand. With all these groups my lefthand was loosely wrapped around my right with the inde2 finger supporting under thetrigger guard. An isosceles stance was used.


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The P=I changes show that this gun is hold sensitive ut with practice and consistencythe groups can e reasonale. The groups shot with each hold type were all very closein sie. A new set of groups might switch the small differences $offhand shooting(.

For most of my shooting I prefer to use a moderate hold on this pistol. If I s9ueee a ittoo tight the P=I only drops a little it. With a loose hold the pistol practically floats in thehands and I don8t li"e the way that feels and if you accidentally tighten your hold the P=Ichanges drastically. With the moderate hold I can usually cluster my groups closetogether at & metres and the P=I is 9uite consistent.

:veryone must find what wor"s est for them. The aove method is my choice.

=nce again accuracy with this springer pistol is very acceptale.

TE,PERAT%RE SENSITIVITY ISS%E

This part of my review was constructed li"e a diary. This approach shows all thechronological steps I too" when attling the temperature sensitivity issue. Hopefully youfind it useful or interesting.

Sep+ 5; $00

'y .-- calier HW45 velocity testing is finally over. 'y last atch of tests involveddisassemling the pistol several times to change seals# springs# and spring guidedirection. I learned a lot and as always I freely and gladly share all the information.


38/58

'y .-- calier HW45 had around -5 shots through it when I starting using &4.5 gr?W@ @uper!H!Point pellets. I found this pellet to e very accurate and locally availale.

All my velocity!vs!temperature testing was recorded with this pellet.

At 03 ! 7F temperatures the velocity was chec"ed many times and found to e 4/ fps.When slightly cooler temps arrived I found a noticeale drop in the velocity. This spurredthe interest to do a velocity!versus!temperature test for this pistol.

'y asement is usually my indoor shooting area and the amient temperature duringthe winter months can e easily controlled. If I prevent the furnace from lowing warmair into this area# I can drop temps to as low as 55F.

I started my cold test y dropping the temp to 53 ! 0F for several hours. The pistol8svelocity was found to e /0 ! /7 fps at this level. I repeated this test many times and

always came up with similar velocities. I wondered how ad things would get so I putmy HW45 into the fridge for aout - minutes. This caused velocity to drop to around/5 fps. =nce again I repeated the test several times. :ven a slight drop to 04F wouldresult in at least &!&5 fps drop in velocity. :very time the pistol warmed up to 7F thevelocity would return to 4/ fps.

'y first suspect was the reech seal. The same type of temperature testing was donewith new reech seals and also with shimmed reech seals. The dropping velocityresults were the same. The reech seal was oviously not the prolem.

The ne2t suspect was the internal luricants. A complete disassemly# cleaning# andlight moly lue tune was done on the pistol. The velocity test results did not change. Ieven tried adding a few drops of pure silicon oil on the spring to lighten up the luricantmi2ture. After many rea"!in shots I still had no change in cold temperatureperformance.

Finally I ordered a new mainspring and two piston seals. I replaced the mainspring andvelocity increased y 5 fps at 7F# ut when I put the pistol in the fridge I would get thesame drastic drop in velocity. I can live with maye a -5 fps drop with a gun that cameout of a 45 ! 43F fridge ut loosing 3 fps is unacceptale.


39/58

The ne2t step was to replace the piston seal. ?emoving the original factory seal was aneasy tas" ut damage to the seal was inevitale. The new seal went on with a firm pushand a couple of taps from a urethane mallet to seat it. The same lue was appliedduring re!assemly. I shot over 0 pellets to rea"!in the seal and distriute the lue. At7F I was only getting an average velocity of 44 fps.

A 5 pellets series wentE 45# 43# 44# 4# 44 fps. I was now totally confused.

I disassemled the HW45 and closely loo"ed things over. I noticed the piston ody hada couple of shiny polished mar"s on the ottom and one on the top. I graed myvernier caliper and loc"ed the aws to the piston seal diameter. I then put the awsaround the piston and rolled the tue to chec" for tight spots. @ure enough the shinyspots were very tight. The other areas on the piston has a few thou clearance ut thesespots were galling. ="ay# maye now I found the prolem. I tried to polish the piston y

hand ut 9uic"ly discovered the ody was hardened. I ended up using my Kremel tooland a hard stone to remove a slight trace of metal from the polished areas. The pistonwas then chuc"ed into a drill using a /+4J ruer sanding drum inserted into the hollowend. I spun the piston and carefully polished the e2terior with 5 ! 3 ! &5 ! -4 ! /-grit paper. It was now shiny# smooth# and circular.

:verything was re!assemled again and lued as efore. 'any pellets were shot toring the gun to a settled state. Celocity was chec"ed and 1= ,HA1G:R I thought Iwould at least pic" up the -5 fps that I lost with the new seal at 7F.

The thin"ing cap went ac" on. 'aye the new piston seal is too wide and theincreased friction is what caused the velocity drop. I was now more concerned aoutgetting ac" 4/ fps at 7F. If I had to live with a warm weather pistol then I might aswell have the ma2imum velocity. The new seal caused velocity to drop -5 fps so mayeit was too tight.

I disassemled the pistol and cleaned all the lue off the piston. I used the drum sanderto spin the piston and slowly polish the sides of the seal with 0 grit paper. Thediameter was compared with the last spare seal I had sitting on my ench. The polishedseal started out wider ut now seemed to have the same diameter as the unused seal.

According to my measurements the polished seal was true and the edges were crisp. Iinstalled the piston with proper lues and re!tested. Celocity was /65 ! 4& fps after afew doen shots. =h oy.


40/58

All I had left to do was install the last spare piston seal. The procedure was done andthe last seal was installed. Celocity was tested and it climed to 4&5 fps.

'y final test was to reverse the spring guide li"e a few P!& owners are now doing. Itwas a simple tas" that only re9uired a very small amount of metal to e removed fromthe disc end of the guide. The gun felt very different when shot with the guide installedthis way. The solid Jthun"J feeling was gone. It8s hard to descrie ut I could tell thingswere different inside. I didn8t li"e the way it felt ut I chronied it anyway. Celocity droppedto /30 ! /65fps. I added a few drops of silicon oil and shot many pellets to spread thelue. Final velocity was tested atE 4# 45# 4/# 4 40 fps Ave 4/ fps. I lost &-fps from when the guide was in the factory installed positionR

I switched the guide ac"# the way it came from the factory. Celocity returned and myreadings wereE 4&7# 4&0# 4&5# 4&6# 4&3 fps Ave 4&7 fps.

I applied a few drops of pure silicon oil to the spring and shot for a it to help distriutethe stuff. I was tired y now so I put the pistol away for the day.

The ne2t day I decided to do the cold temperature test again so I first shot a series ofpellets at 03F and accidentally cut my reech seal with an unseated pellet. I haveseveral spares so I popped one in. The $new warm seal( 03F test wentE 4- 4- 4--#4-4# 4- fps Ave 4-- fps# :nergy 5.74 fpe

The pistol then went into the fridge for - minutes at 43F $chec"ed(. Celocity was testedimmediately after it was removed. ?esults wereE /64# /63# 4# /65# /66 fps Ave /67fps# :nergy 5.3 fpe

I only lost 5.6 velocity with a -F drop in temperature. That8s not too ad considering Iwas loosing &0 ! &3 when the gun had all the original parts. I can live with that.


41/58

The piston seal seems to e the ig factor with the P!&+HW45. The seal fit seems toplay a large roll in velocity and temperature sensitivity.

Kuring my testing with the HW45 I as"ed a few other HW45+P!& owners to do the coldweather $fridge( test. The results were varied. =ne .- calier shooter had a decreasein velocity of -5 fps when going from 75F to 0-F temps. A .&77 calier shooter had nochange in velocity. Another .&77 calier shooter had an increase of - fps when hispistol was refridgerated. =ne shooter8s .-- calier pistol had no change whenrefridgerated ut in a later test he lost -5 fps. 'y pistol had a decrease of -5 fps whenrefridgerated. There seems to e a lot of variation etween test results. Is it the lue#piston seal# reech seal# mainspringS What causes one pistol to shoot faster thananotherS What causes the velocity change with temperature changesS I thin" the piston

seal has the greatest influence on the velocity situation# ut that8s only myopinion+guess.

Sep+ 7; $00

I ran another HW45 velocity chec" at 03F.

%eeman FT@ &4.5 gr 4-4# 4-5# 4-3# 4-0# 4-5 Ave 4-0 fps

?W@ @HP &4.5 gr 4-7# 4-3# 4-7# 4-7# 4-5 Ave 4-7 fps

This computes to 5.37 fpe. This was the same as I was getting with my original factoryspring and seal at 03F. I8m happy.

Sep+ 10; $00

Accuracy had to e tested so I shot 3 targets from & meters. All groups were 5 shotsoffhand and measured center!to!center. It has een a while since I shot targets ut I stilldid o"ay.


42/58

&./J# .35J# &./5J# &.&5J# .6J# .7J# &.&J# .35J

Ave &./J ctc

This is the same decent accuracy as I was getting with the old components.

=ffhand accuracy tested again a few wee"s later.

&.J# &.J# &.J# .3J# .75J Ave .6J ctc

Sep+ $1; $00

Here is a it more velocity comparison data for my .-- calier HW45. Things seem to emuch etter with the new piston seal# new mainspring# and polished piston.

With the original parts my .-- HW45 would shoot &4.5 gr ?W@ @uper!H!Points at thefollowing average velocities.

7F 4/ fps

00F 4& fps

0F /7 fps

43F /4 ! /5 fps


43/58

With &4.5 gr %eeman FT@ I was getting an average of 4-0 fps at 06+7F temps.Celocities with FT@ are only - ! 4 fps less than the @uper!H!Point. Cariations in actualpellet weights etween tins or friction differences are li"ely the reasons.

The piston ody was polished to eliminate the three small ero tolerance spots thatwere ruing inside the tue $descried aove(. The piston was very slightly out ofround ut was corrected with spinning the piston and using emery paper $5 ! 3 ! &5 !-4 ! /- grit(. A new piston seal and mainspring were installed and a rea"!in period ofappro2imately 5 pellets was completed.

1ew results with &4.5 gr %eeman FT@ pellets.

03F 4-5 fps 4-5# 4-7# 4-4# 4-4# 4-0

05F 4-/ fps 4--# 4-4# 4-/# 4--# 4-0

50F 4&- fps 4&/# 4& 4&4# 4&-# 4&&

43F /67 fps $@uper!H!Point(

! 1; $004

I have not tested anything for a while and was getting a it ored. >ast night I left myHW45 in a room in my house in which I turned the heat off. I placed a thermometer inthe room and it said 5F. The gun sat at that temp for many hours. I tested velocity.Celocity was also later tested at 03F and 7F. The average velocity with &4.5gr FT@wereE


44/58

5F /65 fps 5.- fpe

03F 4-- fps 5.74 fpe

7F 4&3 fps 5.0/ fpe

This new Weihrauch spring now has aout &4 pellets on it. The piston seal hasmaye &0. I had a ad feeling the velocity would drop down to the /5s ut it seems

to e holding close to 4 fps in cold temps $43 ! 5F(. 1othing has changed since Itested this spring when it was first installed. That8s good newsR

'y HW45 velocity seems to pea" at 03F. I guess the piston seal li"es that temp forsome reason. The velocity difference etween 03F and 7 ! 7-F is very small utalways there.

The %eeman we site shows an energy rating of 5.& fpe for the P!& $.&77.-(. I almostget 5.& fpe at 5F. I would get that reading at around 55F $I would need only /66 fpswith &4.5 gr(.

Co")*-o*

With the original parts I was loosing 5 to 0 fps per degree of temperature drop $7F!0F(. With the new parts I am now loosing only & fps per degree.

The velocity at 43F with the new seal is noticealy higher with than what I was gettingwith the old parts at 0F $/67 fps vs /7 fps(. With oth seals compared $new+old( at43F# I am now getting appro2imately 5 fps more velocity.


45/58

The temperature sensitivity grief with the HW45+P!& pistols seems to e related to thepiston seal. I don8t "now weather a slightly tighter or looser fit is est# or maye someseals are ust rounder or more pliale. We can only guess at the reason for the velocityimprovement and differences.

HW45 SHOOTING STORIES

For a final section I have a few HW45 shooting sessions which I carefully documented.These stories will give an idea of the accuracy potential of this spring pistol.

)"y :; $00

O&&'!d S'oo+-

'y .-- calier Weihrauch HW45 currently wears a 'illet @P!& red dot sight. The dotsie is / moa and it wor"s great for smaller targets. I li"e the feel of the pistol with this


46/58

sight. The total weight is - ls &4.- o and the alance point is inside the trigger guard.This pistol is sighted for a center hit at & meters.

This afternoon I did some long distance plin"ing with my HW45. All shooting was doneoffhand using an isosceles hold. All shooting was with &4.5 gr ?W@ @uper!H!Pointpellets with an average velocity of 4/ fps.

The distances were measured with a & foot tape to ma"e sure everything wascorrect# no estimates. Tin cans were placed at each distance.

Targets

&o ,ampell8s @oup can -.7JK 2 /.6JH

&4o %ean can /.JK 2 4.4JH

--o Pasta @auce can /.4JK 2 5.7JH

-3o Tomato can 4.JK 2 4.7JH

-.-l ,offee can 0.&JK 2 0./JH

Shooting Results

15 y!rd*! Campbell's Soup Cans

! made 5+5 hits

! aimed at center of can

! had penetration through one side and often oth sides of can

$0 y!rd*! Bean cans


47/58

! 5+5 hits

! aimed at center of can

! penetration through one side of can

$5 y!rd*! Pasta Sauce cans

! 5+5 hits

! aimed a little lower than the top of can and hit center of can

! can dents ut no penetration. The can always rolls+flips over

0 y!rd*! Tomato cans

! /+5 hits on first try and 5+5 hits on second try

! aimed at top of can for hits

! sometimes a slot is ripped in can. >ess than &+- the time the can flips over

5 y!rd*! Coffee Can

! 4+5 hits. @hot a 0th pellet and hit can

! aimed appro2 -J aove can

! can doesn8t move. Pellet ma"es a dent ust elow middle of can

40 y!rd*! Coffee can


48/58

! 4+5 hits on first try. @hot 0th pellet and hit can

! at end of shooting session I tried again and did /+5 and 4+5

! aimed one can height aove can

! mild dents in can ust elow center

45 y!rd*! Coffee Can

! this is stretching thingsR Pellets lo at the target at this distance

! 4+5 hits on can. @hot 0th pellet and hit can

! aimed &.5 can heights aove can to hit

! very mild dent in can when hit

50 y!rd*! Coffee Can

! -+5 hits. Too far to e accurate

Dsing the red dot sight on the HW45 really helps with long distance shooting. :stimatinghold!over is a lot easier with the dot.

I used the ;3 intensity level when shooting outside with the 'illet dot sight. The sighthas && levels. For dimmer indoor shooting the ;- or ;/ level is fine.

)e $:; $004


49/58

O&&'!d S'oo+-

The day was warm so I decided to do some long distance plin"ing in the eautifulcountry. 'y initial plan was to shoot oth the HW4 and HW45 ut I ended up shootingover - pellets through the HW45 and ran out of time.

'y .-- calier HW45 still wears a 'illet @P!& red dot# secured with Lwi"!@ite mounts.The red dot helps with long distance aiming and holdover estimations. I li"e the dot sightecause it doesn


50/58

this pistol ut I did the ul" of today8s plin"ing with the &4.5 gr FT@. %oth of these pelletscurrently shoot appro2imately 4- fps from this pistol.

All distances were measured with a & foot tape. All shooting was offhand using anisosceles hold.

Targets

,ampell8s @oup ,an $& o ! -34 ml( -.7JKia. 2 /.6JH

Hein %ean ,an $&4 o ! /63 ml( /.JKia. 2 4.4JH

Hunt8s Pasta @auce ,an $-- o ! 03ml(

/.4JKia. 2 5.7JH

>arge ,offee ,an $& "g ! -.- ls( 0.&JKia. 2 0./JH

Shooting Results

- yds ,ampell8s @oup ,an 6+& hits U &+& hits

-5 yds Hein %ean ,an &+& hits U 3+& hits

/ yds Hunts @auce ,an 3+& hits U &+& hits

4 yds >arge ,offee ,an 3+& hits U 3+& hits


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4 yds Hunt8s @auce ,an 0+& hits U 5+& hits U 0+&

hits

Penetration

$0 y!rd*! usually penetration through oth sides of can

! can flips over

$5 y!rd*! usually a slot is ripped through one side of can

! can falls over

0 y!rd*! a deep dent in can

! can falls over if hit solidly

40 y!rd*! ,offee can does not fall over

! Hunt8s can will often fall over if hit solidly

Notes

too" several sighter shots prior to scoring at each distance

there was a slight reee when shooting ut nothing terrile

all measurements were doule chec"ed prior to leaving the shooting area

all shooting was carefully documented

)e 19; $00


52/58

O&&'!d S'oo+-

I always seem to do my est offhand shooting late at night# when most normal peopleare sleeping. I guess I rela2 more at night and have less wole.

The distance was & meters and the official &m AP target was used. All shooting waswith an offhand two handed isosceles hold. I used the ?W@ @uper!H!Point pellets for all5 shot groups. A generic Pledge spray wa2 was used as a pellet lue.

All groups were measured center!to!center with the points on a vernier caliper# androunded to the nearest hundredth.

Groups# in order# wereE

Group ;& .3-J

Group ;- .64J

Group ;/ .00J

Group ;4 .03J

Group ;5 .0J

Average group sie was .74J ctc. That8s a Personal %est with a springer pistol at &metersR I can8t elieve itR I usually manage &.* at this distance.

Offhand Shooting @10 metres( shot grou!s"


53/58

)e $004

O&&'!d S'oo+-

@hooting a P!&+HW45 from a sandag rest is an e2ercise in frustration. The recoilingpistol doesn8t seem to perform at it8s est when held in a rest so I decided to shootseveral offhand groups $isosceles hold( using the 'illet red dot.


54/58

Offhand accuracy @20 yards( shots"

%eeman FT@ &.3# &.05# &.35# &.4# &.3 Ave &.7J ctc

@uper!H!Point -.# &.7# &.4# -.# &.65 Ave &.3J ctc

I then shot 3 more groups with the FT@.

&./5# &.0# -./# -.6# &.45# &.-5# &.# &.05 Ave &.7J ctc

I oviously had a couple of flyers that were my fault. The groups show the results.

This was one of my est offhand shooting sessions with the HW45. When I do my partthe pistol performs 9uite well and I have no dout the HW45 is capale of su &J groupsat - yards $5 shots(. If I didn8t have the targets in front of me I would never had thoughthe HW45 was as accurate as it is.

Red /o+ Ver*)* Iro S-'+*


55/58

Kuring Oune -/ I did some - yard offhand group shooting using only my iron sights.The 5 shot groups were fairly reasonale although not as small as with the red dotmounted.

Offhand accuracy @20 yards( shots# iron sights"

@uper!H!Point -.55# -./5# -./5# -.45 Ave -.4J ctc

With iron sights I managed to average -.4* and with the red dot I did &.3* with ?W@

@uper!H!Point pellets. I reduced my groups y -5 y using the dot sight.


56/58

FRE6%ENTLY AS


57/58

A! A spring compressor is recommended. The pistol is not simple to disassemle# utit


58/58
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Weihrauch HW45 Air Pistol