Barrel length

Discussion in 'Piston & Spring' started by Andy B, Oct 11, 2018.

  1. Andy B

    Andy B New Member

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    Has anyone done back to back testing between a standard length and carbine models of the same rifle? I'm thinking TX200 or HW97. Is there any real difference in accuracy?

    If all else is equal, gut feel is that the std. barrel should be more accurate

    Plenty of Internet comments about there being no difference, but mainly on hunting forums where shooters to favour the lighter rifle

    Andy
     
  2. Bezzer

    Bezzer Member

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    Not springers but I've carbined both my standard length AA400 and HFT500 and found no difference in accuracy with either. Still shite on an HFT course but both still bob on from a rest.
    e.JPG
     
  3. Conor

    Conor Never been banned from sales Staff Member

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    The longer barrel on a PCP definitely shoots smoother so has the potential to be more accurate.
    Not sure about a springer though
     
  4. NeilM

    NeilM Well-Known Member

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    I have recently been shooting a TX200 and TX200HC side by side, the main differences so far have been cocking effort and recoil.

    As the HC has a shorter cocking lever, it requires more effort to cock the rifle and as the barrel is shorter logic would say the the spring is stronger in order to generate enough velocity so the recoil is more noticeable. At 25 yards, which is the only distance I have shot them both so far, there is no difference in accuracy.
     
  5. hmangphilly

    hmangphilly Floppy Quick Phil

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    The mk1 /2 have a shorter stroke and stronger spring than mk 3

    Are your full length and hc both the same model neil ?
     
  6. NeilM

    NeilM Well-Known Member

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    Yep, both brand new current models for review.
     
  7. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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    Seem to remember the old Fenmen barrels were only about 9" the rest being taken up with a huge silencer/cocking lever and they were superbly accurate.
    I'm sure I read a piece years ago where some enterprising soul clamped an action and then proceeded to shoot groups at 100yds while progressively lopping chunks off the barrel, I think 9" was where things started to open up probably from lack of push.
     
  8. hmangphilly

    hmangphilly Floppy Quick Phil

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    progressively shortening the same barrel would be a sensible test
     
  9. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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    Bit of a downer to realise after all the cutting that you had just destroyed a stellar barrel....;)
     
  10. RobF

    RobF Administrator Staff Member

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    It would be a royal pain with a choked barrel.
     
  11. RobF

    RobF Administrator Staff Member

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    Just pull another one off the shelf. I’ve not been dissatisfied with a LW yet. Quite why anyone bothers with anything else I don’t know.
     
    NeilM likes this.
  12. hmangphilly

    hmangphilly Floppy Quick Phil

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    All in the name of science colin .....
     
  13. hmangphilly

    hmangphilly Floppy Quick Phil

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    That's. True
     
  14. RobF

    RobF Administrator Staff Member

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    If all we're doing is measuring power we could do it quite quickly with an unchoked barrel... testing for accuracy brings in all sorts of variables as the crown would have to be redone each time and then the thing rezero'd etc.
     
  15. hmangphilly

    hmangphilly Floppy Quick Phil

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    Or leave both ends alone and take a bit out of the middle
     
  16. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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    I believe that is what the test involved; chopping off an inch and then a full recrown, the guy must have a complete nut job, only Holly would think of something so crazy.
     
  17. hmangphilly

    hmangphilly Floppy Quick Phil

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    Errr

    I think we were going to do that test too .

    No idea when we thought we would make the time
     
  18. RobF

    RobF Administrator Staff Member

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    What we could do is chop an unchoked down and find the sweet spot power wise, then start with a known good barrel and chop it and see if it works just as well at that new length...

    That's what we could do...
     
  19. JoostB

    JoostB Member

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    I would prefer the shorter barrel just because the chance of you moving just before the pellet has left the barrel is a tiny bit smaller.
     
  20. Andy B

    Andy B New Member

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    Is the spring a different part number between TX200 MK3 models? I can't find an HC specific spring. Perhaps the weight distribution is altering the handling/response?
     

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