I have shot insanely good moa groups with Norinco bulk 7.62 from my R700 xcr tactical , better than any other run of the mill non match factory ammo i have tried ! Im just too scared to make a habit of it with the bi metal jacket bullet . Its almost worth sacrificing a barrel to see if the lifespan would be shortened much from Norinco ammo because damn it shoots good for about 35 cents a round , could just be my rifle likes it ?? I might just buy a cheap used 700 sps and only run bulk norinco in it and see how far i can get before i need a rebarrel.