This is for a friend who just started reloading. 225 grain cast bullet, Unique powder, 45 ACP in a 1911 Springfield. I wasn't there and haven't seen the cases, but 'most' came out with a flattened edge on the case mouth he claims. I worked out with him the other night how to set up COL and how to taper crimp. He said they cycled thru the gun with no problem. But picking up the brass he noticed the straight flattened side on alot of the brass. I don't do auto pistols so I thought I'd throw the question out here. Any ideas???