Pellet pushing

Discussion in 'General Airgun Chat' started by hmangphilly, Feb 28, 2018.

  1. hmangphilly

    hmangphilly Floppy Quick Phil

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    Be Careful shoving bits of metal into your bore Mike .

    Barrels are usually made of pretty soft stuff and it doesn'ttake much to make a scratch .
    I'll do you a plastic one to play with .
    How far do you think you are pushing ? From the pics I'm guessing 1/2 mm ?just seatingThe skirt into the rifling . Thats what rob and monty were doing .

    The batch of pushers I've just put out are longer and sit the pellet further in .

    We shall see how they go . Exciting innit ?

    Ps
    Im rather hoping it's the squareness thing that counts
     
  2. mike

    mike Active Member

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    Hi Phil,

    That would be brilliant, thank you.

    If it help's I am only in Southampton and can pop over to you.

    It's probably just over 1/2mm because the end of the barrel isn't square and has a slight bevel to it.

    But there definitely seems to be an improvement in the efficient use of air behind the pellet, this could lead to me reducing hammer spring tension as I find my Steyr seems happiest running at about 11.4 fpe.

    ATB
    Mike.
     
  3. hmangphilly

    hmangphilly Floppy Quick Phil

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    Sure pop over

    The end of the barrel is not square ?
    That's odd , how does it seal properly ?
     
  4. mike

    mike Active Member

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    Sorry Phil, probably used the wrong terminology, should have probably said ... completely flat faced, it has a slight bevel inwards almost like a crown.

    M.
     
  5. hmangphilly

    hmangphilly Floppy Quick Phil

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    gotcha

    i think that might be what I'm calling a leade -in or leade or lead ......depending on how i feel at the time .
     
  6. nudge it just a little

    nudge it just a little Member

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    I used a golf green marker as the nipple on the back fits perfectly also yes it seems to make the gun faster
     
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  7. hmangphilly

    hmangphilly Floppy Quick Phil

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    A few pushers sent out for testing

    Got a couple left if any one wants a go

    Prob an anschutz one would be an idea
     
  8. hmangphilly

    hmangphilly Floppy Quick Phil

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    same effect when we put a pusher in .

    The power went to just under 800 /8.4 s

    Air must have been leaking past the pellet


    Ps
    edit
    I'm referrring to the same ( Mikes ) gun
     
    Last edited: Mar 20, 2019
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  9. SteveC200

    SteveC200 Active Member

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    This just popped up on a facebook FT page, might be of interest.

    55736519_10156863330935953_276304141028950016_n.jpg 54728689_10156863330960953_4019363964784738304_n.jpg
     
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  10. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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    I think that was tried initially but discounted as it pushed the pellet off centre or something.
    Hangman’s design that pushes round the outside evenly seems like the best solution to be honest as you don’t have the probe getting in the way of air flow.
     
  11. hmangphilly

    hmangphilly Floppy Quick Phil

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    Starting to get a bit of feed back from the field test team .
    Mostly positive .
    No 1 Northern chuffbag field tester cleared a course on saturday. ( with a short leade , non std barrel and short peleet pusher )
    No 1 North Worcestershire field tester came back with some interesting chrono numbers ( short leade std barrel ........I think )
    No 1 , Two gun Stafforshire fieldtester seems quite positive .(Std barrels )

    No 1 Overseas ( south) field tester had not so good results , groups opening up at longer range . This is with a non steyr barrel with a shorter leade ,so we shall try a shorter ' pellet pusher thing me bob ' ( new official name ) ............( thanks to Kenny for inventing the name ) That might become PPTMB if it sticks , or just PP or even TMB Or what ever .........watch this space .

    Field test team , feel free to put your findings up here If you like ( no need to PM )


    got a few to make in shorter lengths for non steyr barrels and some more for a couple of new test team member volunteers .............when I put my machine back together after some surgury

    Thanks Team , for your input...............fun this ............innit ?
     
    Last edited: Mar 26, 2019
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  12. hmangphilly

    hmangphilly Floppy Quick Phil

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  13. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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    I might be missing something as I'm not familiar with Steyr stabilisers but how does that work without a spring at the front?
    pellet push 2.jpg
     
  14. hmangphilly

    hmangphilly Floppy Quick Phil

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    Don't think It does Colin .
    That's why the PPTMB are different design
     
  15. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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    So on the probe design you lose the stabiliser and gain more air used due to probe restriction and off-set pellets, nice.
    I think your design is a no brainer....;)
     
  16. mike

    mike Active Member

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    Unfortunately due to a tight fitting breach as you can see from the pics shaved a little bit of lead

    20190320_211803.jpg 20190320_211138.jpg 20190320_180553.jpg 20190320_180656.jpg
     
  17. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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  18. mike

    mike Active Member

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    Yep, just a little lighter than when they went in;):D:D
     
  19. C.Eaton

    C.Eaton Confirmed Anschutz Nut...

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    Are you totally sure they were .177....;)
     
  20. mike

    mike Active Member

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    Not by the time they exited the barrel.
     

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