FX Impact X .25 cal/ Power Tuned by Ernest Rowe

Forums General Airgunning FX Impact X .25 cal/ Power Tuned by Ernest Rowe

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    2manyAirGunz
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    *V0-Velocity at muzzle

    V15-Velocity at 15 ft.

    Ke0 – energy level (FPE) at muzzle

    Proj. weight- projectile wt-34gr

    Chronograph-Labradar

    avg-975.12 fps

    hi-979.16fps

    lo-968.12 fps

    ES-10.34

    SD-3.29

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    stoti
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    Sweet! 

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    Pestkillah
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    I echo stoti's reply – sweet! How many shots are you getting?

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    2manyAirGunz
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    Pestkillah

    I echo stoti's reply – sweet! How many shots are you getting?

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    Approximately 3 psi  bar per shot. 250 bar fill. Regulator at 150 bar.

    I have not yet shot the rifle to less than 170 bar. I find the tune to be air efficient for 70+ fpe.

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    Cranky1
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    How is the accuracy?

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    2manyAirGunz
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    I don't have any targets to post, as I haven't taken this rifle to the range in 3 weeks due to the weather here in north-central Alabama. It's either too cold or its wet.

    On the range at 50 and 100 yards this rifle was sub-MOA.

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    ackuric
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    3 psi drop per shot huh? You sure you did the math? With a 250 bar fill coming down to 170 bar is 1160 psi..at 3 psi per shot that means you get 386 shots…at what power is that? Maybe you meant 30? 

    • This reply was modified 1 week ago by ackuric.
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    Spray1Mark
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    970 with the 33g JSB from a .25? what on earth did he do to it? and is this a 600 or 700mm barrel?

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    Spray1Mark
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    3 Bar per shot is about what my Crown uses in .30 cal.

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    2manyAirGunz
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    ackuric

    3 psi drop per shot huh? You sure you did the math? With a 250 psi fill coming down to 170 bar is 1160 psi..at 3 psi per shot that means you get 386 shots…at what power is that? Maybe you meant 30? 

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    My mistake. Of course it's approximately 3 bar per shot.

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    2manyAirGunz
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    Spray1Mark

    970 with the 33g JSB from a .25? what on earth did he do to it? and is this a 600 or 700mm barrel?

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    The barrel is 700mm smooth-twist X.

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    ackuric
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    3 bar sounds much more correct :P

     

    Happy shooting!

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    2manyAirGunz
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    970 with the 33g JSB from a .25? what on earth did he do to it? 

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    That information might be proprietary.😉

    Seriously though , "The Master" does market a power tune kit, if I'm not mistaken.

    The suspect in question:

    Note in the photos the modification to produce increased plenum space.

     

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    2manyAirGunz
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    *Addendum: As the photo clearly shows, the rifle does not appear to be the vaunted X version Impact.

    Dispensation, please. I'm getting old.

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    2manyAirGunz
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    ackuric

    3 bar sounds much more correct :P

     

    Happy shooting!

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    + 1 for you. Your civility is appreciated.

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    Cranky1
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    Honestly with fox going to a 3yr warranty I would really like to have an impact. But I just bought my r5m, and can wait to see if they make any changes to the impact with all the new stuff coming out. 

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    Killemdead
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    Shot count & crony on my Fx wildcat mk1

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