I'm shopping for a case of surplus ammo for my M1A loaded. So far, it looks like a toss-up between Portuguese, British Radway Green, and Argentine. Does any one of these seem to be any more consistant than the others? I read every "surplus .308" thread I could find here, and I only found a couple of posts referencing the Argentine stuff....but every person that commented on it had very positive things to say about its accuracy. Does it have a steel or copper jacket? I gots to have copper...so the Hirtenberger from AIM Surplus is out. Your input is appreciated.