FX Impact barrel temp after rapid fire.

Forums PCP Airguns FX Impact barrel temp after rapid fire.

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    eodman
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    Was at the range today and rapid fired a string of 20 silhouette as fast as I could and hit all of them in decent time. I touched the barrel was surprised that it was so cold. I'm used to center fire rifles and if I shot 20 rounds this fast I would have burned myself. I intend to go back out next week and shoot fast and see if the temp of barrel changes impact of pellets. 

    Anyone ever noticed this and what effect did it have on accuracy ? Just curious

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    toku58
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    There is no incinerating of gun powder. So the there is no source of heat other than friction . Having air blow through the barrel also cools the barrel 

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    jarmstrong
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    compressing air creates heat

    releasing the pressure absorbs heat

    thus the cooling effect on the barrel

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    eodman
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    I know about that I was just wondering if point of impact would change. I'm old enough to know hot from cold and compressing air and venting air at pressure and results. I was just curious if any one has noticed a change of point of impact when barrel got real cold that's all.

    Thanks 

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    Saltlake58
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    I've shot rapid fire for one magazine only.  Didn't notice any point of impact change.  The Impact stayed cool, no signs of warming or anything like that.  

    Just my observation, nothing scientific.

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    AirGunnerOK
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    Pretty sure you won't ever generate enough heat in the barrel to affect POI.

    However, if you were to take an IR temp gauge and take measurements of the barrel before and after the shot string, I believe that would make for a fun and interesting conversation.

    Happy Shooting!

     

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    eodman
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    I know I wont generate heat in the barrel I was just wondering how cold the barrel would get and if it would affect accuracy.

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    AirGunnerOK
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    I'm really interested in what your observations and findings will produce.  Thermodynamics is always an interesting subject to discuss.  Can twist your mind into knots most of the time.  I always love to learning something new.

    Happy Shooting!

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