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Bisley mags

Discussion in 'Anything Airgun Related' started by kev..., Feb 27, 2014.

  1. kev...

    kev... Engaging Member

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    Hi fitted new internals to my rapid last week so bought a selection of pellets to set it up.

    Set it to 11.7 with Bisley mags 21 grains I believe then tryed to run ffts 14.6 grain through it was coming out at 12.5 any advice on the best way to set it up without trying every pellet available to humankind??
     
  2. mattyts

    mattyts Donator

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    Ideally you want 9 types of pellets, 3 different weights with 3 different head sizes.
     
  3. Speed

    Speed Busy Member

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    in a pcp lighter pellets make more power in a springer heavier pellets make more power

    set it to 11.5 with the 14.6gr then test the mags
     
  4. SteveO

    SteveO Top Poster

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    Shouldn't that be the other way around?
     
  5. trumpetier

    trumpetier Pro Poster

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    yep :)
     
  6. Harwich Shooter

    Harwich Shooter Donator

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    Yep too. My experience with pcp's are that heavier pellets increase the ft lbs
     
  7. mattyts

    mattyts Donator

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    That's wrong,usually its the reverse but in some guns,different head sizes effect the power just as much as weight does so don't just set your power with the lightest/heaviest you can find!
     
  8. Igotknobblies

    Igotknobblies Engaging Member

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    When I first chrono'd my pcp I set up with accupell .22 @ 11.5ftlb. Bis mags came out at nearly 14. Quick fiddle with a screwdriver so the mags are just over 11.5 and the 'pells about 10.5 . Shame really that the law goes the way it does. If you only have 1 pellet type in your possession and its below the limit that should be ok. I'd be surprised if the local police balistics guys have the full range of ultra light and ultra heavy pellets. Probably best if whenever you're out with the gun, chuck the chrony in the car. I'm sure a copper wouldnt

    want to waste police time if you can prove its acceptable in front of him! Good luck with setting at 'the sweet spot'
     
  9. Steve K

    Steve K Posting Addict

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    How many times does this come up, and the same wrong advice given???

    There are no "usually", or "as a rule" with PCP's or springers, some rifles put out more power with lighter pellets, some with heavier pellets, and head size will have as much, if not more effect on power than weight in many cases.

    You really do need to check with lots of pellets, type, weight, and head size to make a comparison, and even then you'll never be sure that your rifle is legal with every type of pellet.

    This is what make the whole sub 12ft/lb law such a mockery.

    To Kev, your gun obviously needs turning down, by how much is up to you ;)
     
  10. metalman

    metalman Big Poster

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    Why people want to run so close to the legal limit is beyond me :confused:
     
  11. keithy

    keithy Keyboard Hero

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    I totaly agree H & N ftt 5.53 15 grains make more than power than 19 grain 5.52 barracuda extremes in my HW But in my BSA R10 the 19 grains make appreciably more power than the H & N 15 grains its a complete mine field. :mad:The gun shop advised stick to one or two pellets and plead ignorance of using any other pellet types. The law states'' if a gun is capable '' 99% of all springers will go over with the addition of a few washers. Even if you try all the pellets your gun shop sells there may still be a pellet out there that will take it over. Trying to adjust recent PCPs is a nightmare as they all come with anti tamper devices perhaps the answer is set your power if possible to 10.6 ft ilbs and hope.:rolleyes:
     

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