Barrel vibration in slow motion with a FX Impact .25 caliber

Forums PCP Airguns Barrel vibration in slow motion with a FX Impact .25 caliber

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    GQ
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    If you concentrate and pay attention at the barrel you can clearly see how the barrel react at the shots.


     

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    hsnmz
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    It’s not just the barrel the whole gun vibrates. A full power 25 cal packs a lot of punch. I think any gun would vibrate like that.

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    GQ
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    Of course.
    Some users think there is no vibrations in PCP.
    The barrel vibrate mre than the other parts.

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    Jonnes
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    Barrel vibration happens in all rifles, powder burners, PCP’s, brake barrels. It’s actually called barrel whip or harmonics. Here’s a good example of that with a HW90 gas ram.

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    GQ
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    Exactly Jonnes.

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    broekzwans
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    I think the video of Jonnes is showing barrel vibration more clearly.

    Do you preload the bipod when shooting (pushing forward on the bipod)? It looks like the rifle can’t recoil naturally so start jumping. Or maybe it’s the table :P

    Nice setup though! Still like the impact :)

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    GQ
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    Even on a concrete table the barrel vibrate the same way and on a strong bench rest it is the same.
    Thank you.

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    broekzwans
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    “GQ”Even on a concrete table the barrel vibrate the same way and on a strong bench rest it is the same.
    Thank you.

    
Maybe it’s just the rifle then. As long as it shoots dead-on it shouldn’t be a problem :)

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    GQ
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    Exactly

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    broekzwans
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    What is the avarage group sizes you can achieve with the Impact? If I would buy an Impact it would be the .25

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    GQ
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    I have an average .35 inch at 50 yards

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    broekzwans
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    That are nice, decent size groupings then! Thank you for the answers.

    I like the scientific approach with the high speed camera! With a high speed camera you can detect more (shooter) errors than with the naked eye, this helps a lot in perfectioning the shooting. Forgot to say that in my first post

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    GQ
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    Yes slow motion video can help us a lot to improve our shooting techniques.

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    fe7565
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    The bipod is certainly telescoping and absorbing a lot of the vibration from the gun.  This up and down movement seems to accentuate the barrel movement as well. 

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    oldspook
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    If you watch the space between the barrel and the bottle, you will realize that we are NOT seeing barrel vibration in this video.  If you watch the table top and the bipod, you will realize that we are seeing the table top absorbing the recoil from the shot and feeding it back into the bipod.  If you watch the front edge of the blanket, or the pellet tin, you will realize we are not seeing barrel whip. This is clearly a gun being fired on a flimsy table.

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    GQ
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    I will produce other video with a concrete table and show you that you are wrong..
    All the vibrations are transfered in the barrel like any other rifle and it is normal.

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    fe7565
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    @gq, there is no doubt that the barrel vibrates, but hard to tell how much of that vibration in the video is helped by the bipod/table and how much is the barrel itself.

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    Jonnes
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    @gq; You need to take off the shroud to actually see the barrel whip because all you can see now is movement of the entire rifle. And you need a camera that’s able to record at least 250, preferably 500+ frames per second to register it because a normal camera registers 25 to 30 frames per second and this all happens in less then 1/10th of a second.

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    GQ
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    There is 240 fps on this video.
    I will work on new videos.
    But the shroud is fixed and cannot be removed.
    And of course all the rifle parts,are vibrating and the bipod and the table.
     

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