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Shot Count... 150 Down To 80 Bar

Discussion in 'Anything Airgun Related' started by AirRifleSport, Apr 10, 2018.

  1. AirRifleSport

    AirRifleSport Well-Known Member

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    Set up the regulator to 87.5, or at least the indicated approximation and set the power to 11.40 using Air Arms Diabolo Field 16 grain (the actual weight was 15.94 average) and started shooting on a couple of targets, from 150 to 80 bars I was amazed at the shot count! I used 8 full magazines. Didn't know that this was possible.
    HW100T in .22, it's the full length barrel.
    Anyone got similar results?
     
  2. mikeyhall1

    mikeyhall1 Amazing Poster

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    Sounds really good that mate:):thumb:
     
  3. AirRifleSport

    AirRifleSport Well-Known Member

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    Yeah, especially as my dive bottle has a maximum fill of 200 bar and it rarely let me fill the rifle to the near maximum.
    Quite pleased really as I can let the dive bottle go down to 120 bar before refilling it.
     
  4. mikeyhall1

    mikeyhall1 Amazing Poster

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    That's they way mate - winner:)
     
  5. sharpsman

    sharpsman Big Poster

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    thats just 0.625 bar per shot thats excellent .
     
  6. AirRifleSport

    AirRifleSport Well-Known Member

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    Average of 568 FPS at 10 centigrade
    My not so good shooting... 10 shots cornered by 5 pence piece at 35 yards. I think I should leave it alone now and enjoy shooting it.
     
    littleJon365 likes this.
  7. mikeyhall1

    mikeyhall1 Amazing Poster

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    Those groups will tighten up with a bit more shooting. The Hw100 is a class act
     
  8. AirRifleSport

    AirRifleSport Well-Known Member

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    Oh.. I do believe that these rifles can do much better than the shooter. I can see the effect of my heart beating when a touch the trigger. Coffee don't help either and I drink plenty unfortunately.:confused::coffee:
     
  9. Scubashot

    Scubashot Engaging Member

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    I have the 100S in the full length 0.22".
    I have the reg pressure and power output set to figures matching yours. Mine certainly shoots quite happily well down into the yellow zone.
    According to Weihrauch's website the shot count for this calibre and barrel combination should give 140 shots (10 mags). I haven't actually counted mine as I usually forget or lose count long before I get near its limit.
    I have been using similar pellets - Weihrauch FT Exact Jumbo which are another JSB Exact derivative. They are listed as 5.51mm and 15.89 grains, which like many premium pellets, work well in the rifle.
     
  10. terry1001

    terry1001 Major Poster

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    Usually the regulator would be set a bit higher than 80 bar but if the poi doesn't start to drop off then you're obviously fine.
     
  11. keithy

    keithy Keyboard Hero

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    Its quite possible my .22 did at least 175 shots with no drop I never actually ever ran out of air while I owned it.
     
  12. Scubashot

    Scubashot Engaging Member

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    AirRifleSport, like me, had his reg set at 87.5 bar not 80.
    I originally followed guidelines that suggested 85 bar for a 0.22" rifle, 90 bar for a 0.22" karbine or a 0.177" rifle and 95 bar for a 0.177" karbine.
    It is often also suggested that the pressure should be set to match the point where the green zone on the cylinder joins the yellow zone. That is at 90 bar on my 100S rifle in 0.22".
    The set point of 87.5 bar was a compromise between those two figures and seems to work pretty well.
    I imagine that lots of fine adjustments to the reg pressure and hammer spring may improve the shot count further but frankly it is already so good that I don't feel the effort justified.
     
    AirRifleSport likes this.
  13. AirRifleSport

    AirRifleSport Well-Known Member

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    Of ourse, the 87.5 bar setting is approximate as it is analog and not the other Digital manometer.
    The needle definitely pointed between 85 and 90. Also made sure to test shooting over 30 times before settling for that.

    I tried it at 80, 90 and 92.5 too but FPS variation increased to over 12 but with current settings is under 4 FPS over 20 shots. I still get the od pellet going high and low though but I am looking a little on the effect air density and lower/higher temperature effect on pellets. It seems that it is quite common to any air rifle. A subject which I know nothing at present but worthy of its own thread.

    Some of you clever people want to talk about it? ;)
     
  14. terry1001

    terry1001 Major Poster

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    The gauge on the rifle is likely to be less accurate than the one on your bottle or pump, basically it's there as a guide and it only shows fill pressure and not the regulated pressure. Ideally it should start to go into the yellow zone just before it drops off the regulator.
    Normally regulator pressure is set with an external gauge fitted to show the low pressure value. HW do give factory settings which are a good guide for a starting point and then there is a process for balancing the internals to reach perfection. However it sounds as though you're getting staisfactory results so further adjustments are unlikely to give much improvement, it depends on how much you enjoy tinkering.
     
  15. AirRifleSport

    AirRifleSport Well-Known Member

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    Yes, the manometer on the rifle I inaccurate on mine, about 7 bar over when compared with the dive bottlte's one. The regulator test was carried out with an additional manometer, as it should; and yes, I'm happy with the results.
     

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