Originally Posted by Young-Gun
I have been looking at buying a shaw barrel for my Ar build, how was break in on the barrel?
It was a little dirty, I used a few different cleaning products. It seems what one wouldn't remove the other did. After trying a copper remover I found there doesn't seem to be any abnormal copper build up. I didn't use any break in method as I don't believe in them. I just shot about fifty 55 gn fmj that I had loaded for another gun. I fired them slowly, mostly single feed. I then went to the bench and started developing loads. I did a normal cleaning to remove fouling after each range session. It likes the 52 grain sierra HPBT. It loves the 60 grain sierra HP varmint with AA 2460.
I am very pleased with the barrel and I'm sure you will be also.