Canned Air

Joey Dean

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Jul 8, 2010
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Has anyone put a short blast of canned air down their barrel between shots on an OCW or Ladder to aid barrel cooling?

I am not talking about emptying a full can down a smoking hot tube here.
 

M1Amen

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I have seen competition shooters use an aquarium air pump to cool their rifle barrels by running a piece of tubing from the air pump to the bore. I would think the can of air is not going to do a whole lot for you unless you give a really good long blast. Maybe some of the competition shooters can chime in with an air pump technique.
 

Griff24

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Dec 3, 2012
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Canned air is usually a liquid under pressure that expands into a gas. One byproduct from liquid->gas expansion is heat absorption. It will cool the barrel very rapidly. I would think that would be a bad thing in a precision rifle barrel but that is my uneducated opinion.
 

Joey Dean

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Griff,

That is my point. The cooling would be dependant upon the length of the blast. I think, but have no data to back it up, that as long as we are not talking a radical temperature swing there would be no harm. Hence my point on doing this between rounds so there was no substantial heat build up in the barrel to begin with.
 

George Az

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I have been to a drag race and seen guys put bags of ice on the intake manifold before the next run. I am wondering.........
 

ChrisGarrett

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    I would think that near the end of the air tube, you'd get quicker, more rapid cooling and perhaps a tighter contraction, than you would get near the muzzle, or vice versa.

    Chris
     

    Griff24

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    If the temp change isn't drastic I don't think it would hurt. Now I have this mental picture of somebody with an upside down can dumping liquid into the chamber.