As I work up loads for my rifles, Iím shooting groups for accuracy and measuring velocity.
As part of the process, I let the barrel cool completely between shots.
When itís 30 degrees outside, this doesnít take too terribly long, and I can shoot 3 groups with each rifle (I bring two with me, working up loads for both) in the 2+ hours I have to spend at the range.
But now itís in the 60s (maybe even 70 today). Often the barrels wonít seem to cool completely, even in the shade - even leaving 10 minutes between shots. Iím late getting back to my family, only having shot two groups with each rifle.
Much as I love spending time at the range, Iíve got other obligations in life, so Iím wondering if thereís a good way to cool the barrel more quickly. Iím obviously not dousing my rifles with cold water, but perhaps I could wrap a couple gel-packs in towels and set them atop the barrel for a minute or two? Then I could pull Ďem off and give it a couple of minutes for the heat to redistribute so the steel is a uniform temperature all the way around before firing. Wouldnít want a barrel thatís cool on top and warm down by the stock, Iím sure.
Is there a downside to this idea? Iím only talking about one shot at a time, so I canít imagine the temperature differential would temper or in any way weaken the steel, would it?
Is there a better method? Do I just need to suck it up and put in the hours?