44AMP, the military's phobia about a dirty weapon was never based on accuracy with or without a copper fouled bore. 'Twas based on wanting weapon users to ensure their weapon was in good enough condition to shoot without a stoppage. There was more to keep clean and cared for than just the bore. Corrosion was the biggest concern.
Besides, a good centerfire sporting barrel will shoot several hundred shots without cleaning before accuracy gets worse than 1 MOA. And military combat rifle barrels will shoot 2 to 3 MOA for a thousand or more rounds of military ammo without cleaning; that's typically their accuracy spec.
US Navy Distinguished Marksman Badge 153
Former USA Palma Team Member
NRA High Power Long Range High Master
NRA Smallbore Prone Master
Last edited by Bart B.; February 7, 2013 at 05:06 PM.