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-   -   barrel temperature (http://www.firearmstalk.com/forums/f48/barrel-temperature-2449/)

JimDuncan 10-24-2007 07:14 PM

barrel temperature
 
I have heard that barrel temperature can affect groupings during competitions, is there any method of cooling your barrel thereby making your gun more accurate?

Bidah 10-24-2007 09:22 PM

Dry Ice works really good as it is very cold. A water jacket with cool water running through it will work out well also. You could also utilize a barrel diameter that is 7 times the bore diameter to help.

-Bidah

cpttango30 10-25-2007 12:55 PM

Oh barrel heat will have a drastic affect on your groups. I would not be one for putting dry ice on my hot barrels that could cool one part of the barrel to fast causing it to warp affecting your barrel even more than the heat.

Many guys I know that go out Pdoggin will once a barrel is too hot to shoot take a small bottle of water and pour it down the barrel to cool it down. It all depends on what your shooting. Sometimes you can not have a nice fat barrel due to weight/class restrictions.

longshot 10-30-2007 05:31 PM

Personally I'm against cooling barrels with water, dry ice or any other method. When I got out for Pdogs I'll take multiple rifles or a buddy. When another shooter is present we switch off from shooter to spotter to allow the barrels to cool down naturally.

Bidah 10-31-2007 12:32 AM

I am surprised, and not surprised, that nobody thought what I posted was actually a tongue in cheek response to the post... I guess my fault for trying to inject a little humor... :)

-Bidah

bradam 11-15-2013 05:15 AM

had an old timer tell me to use a damp cloth

danf_fl 11-15-2013 10:20 AM

Let me think on this....

-IDPA has normally 18 rounds per string (Nah, that won't get the barrel too hot).
-The most I've shot in an IPSC string was 48 rounds with a lot of movement between targets. (It didn't seem to affect the accuracy of the firearm as much as it did me.)
-Cooling a barrel incorrectly could warp it and create inaccuracy or other problems.
- I've had only one firearm get too hot to shoot when I was messing around with a dueling tree and someone of about equal capability. But the accuracy was still there after 80+ rounds were shot.

So what are you shooting to get the gun so hot that accuracy is affected?
(Now rifles are a different story.)

Gonzilla 11-23-2013 03:38 PM

Mini -14's have thin barrels & when shooting 30 rd mags they get smoking hot fast. I have a friend who has the exact same gun and we compete by throwing a tennis ball out and see who can keep it moving.
(Fun game - accuracy can wander but also challenging to walk rounds in.)

IPSC - 1911's can take the heat but I don't recall ever shooting beyond 25 yds in a compeition.

John_Deer 11-23-2013 10:09 PM

Rifles with a sporting barrel heat up very quick. I have a Marlin XT 22MR. After one 7 shot magazine I can feel the barrel heating up. After the second magazine the rifle is spraying shots like buckshot. Sporting barrels are intended for hunting. They are light enough to carry all day but there is a trade off, you can only shoot a limited number of rounds before the barrel heats up.

Sniper03 11-23-2013 11:27 PM

Duncan,

I am assuming you are possibly speaking about rifle barrels. Unless you are required to shoot sub 3 MOA (3 inch) groups at 100 yards. The heat factor is not going to be that much of a concern for regular competition shooting. Most generally the barrel will cool enough between phases of competition not to affect the overall performance. If you are shooting precision rifle competition where sub MOA groups of 1 MOA are normally required there is certainly a consideration for barrel heat. That is why Sniper and precision marksmanship rifles have heavier barrels or fluted barrels to accelerate the cooling of the barrel. My first assigned sniper rifle was a regular contoured barrel. It would fire the first three rounds sub 1 MOA groups. But shoot the fourth in the sequence and I had a 1 1/2 MOA (1 1/2 inch) flyer! Let it cool and the next three were tack drivers! But the key point as I have stated, most of the regular competition events that some are engaged in allow the weapon to cool between stages.

03


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