Sighting in Rifle

[Elk whack master]

How many rounds do you shoot before letting the barrel cool,and how much does heat affect accuracy? Im shooting a .300win mag.

[RB]

I usually shoot three rounds (.300 win mag) and let it sit for a few. Usually try to burn through a box but not too fast cause my muzzle brake irritates the shooters around me. Then go back another day to see how it shoots completely cold. Also take another rifle or two to fill in time and check zero on them. Then go home and clean for awhile 

[bobcat]

I don't like to shoot more than 5 at a time out of my 270. Then I'll usually shoot another gun and let it cool down for 5 or 10 minutes. It really helps if you go early in the morning while it's still somewhat cool out. I try not to go shooting at all if it's much above 75 degrees or so. It just takes too long for the barrel to cool down.

[Heredoggydoggy]

I read an article a while back where the guy shot until his barrel was hot, and cooled it with icewater.  He wanted to see if it would affect accuracy in any way.  It didn't, and he could detect no harmful effects done to the barrel.  Just thought I'd throw that out there, as the discussion is about the effects of heat on barrels.

[cwuwildcat]

I just try to pace myself, more than go by a set number of shots. 

I take a shot, look around, step back, stretch, see what the other guys around are doing, bs a little, take another shot, repeat.  Every couple of shots grab the barrel and if it feels really warm to the touch, I wait a couple more minutes.  I always leave the bolt open between shots to let alittle air flow through.  Don't know if the heat affects it much, but I think of it this way, "how fast can I afford to throw three dollars down range each shot?".  That's kind of what you're doing each time you pull the trigger when you're shooting the larger calibers.

[buckfvr]

Run a bore snake down the tube every couple rounds and let it cool to the touch.

[Heredoggydoggy]

I always test the amount of heat by grabbing the barrel with my hand.  If it's too hot to hang on to, it's too hot to shoot.  Not very scientific, but it works for me.

[JODakota]

Run a bore snake down the tube every couple rounds and let it cool to the touch.

 

[snowshoes22]

I'm with bobcat i take several rifles and spread the shooting out between them. 

[LiveandLearn]

I'm with bobcat i take several rifles and spread the shooting out between them.

[JimmyHoffa]

I like to take a .22 when sighting in other rifles.  You can fire off a mag or two from the .22 while the bigger gun cools off enough for the next shot.