http://www.6mmbr.com/borebrushing.html
Some of these guys don't clean much, others clean every 5 rounds plus foulers.
I've personally noticed on a 10/22 that if I never clean it, it usually is more predictably in the 10 ring. After cleaning, it takes about 20 shots to start hitting well again. I've read that this is because lead/copper and carbon smooth over problem areas in the barrel from tooling. Seems likely.
I've always cleaned centerfires frequently because I'm afraid of rust, grime, etc.
But I notice the same here, it takes a bit for the groups to start shrinking back down again post cleaning. Maybe I should never clean and see what happens.
Some of these guys don't clean much, others clean every 5 rounds plus foulers.
I've personally noticed on a 10/22 that if I never clean it, it usually is more predictably in the 10 ring. After cleaning, it takes about 20 shots to start hitting well again. I've read that this is because lead/copper and carbon smooth over problem areas in the barrel from tooling. Seems likely.
I've always cleaned centerfires frequently because I'm afraid of rust, grime, etc.
But I notice the same here, it takes a bit for the groups to start shrinking back down again post cleaning. Maybe I should never clean and see what happens.