Hey guys, I was looking at picking up a crate of surplus 7.62x51 to blast off in my poly M14, and I was just wondering if anybody has had any issues? I'm used to shooting corrosive (x39) and cleaning with boiling water and some elbow grease. Aside from the barrel and gas system is there anything else I should be paying attention to? I usually give the whole rifle a bath, but pay most attention to the gas system and bbl.