I put that process in the steps I made for making 300BLK cases from 5.56 cases. I chamfer the hell out of them, inner and outer, with a VLD chamfer tool, right after cutting them off, and before final-length trimming. Makes trimming them down ALOT easier. They get chamfered again in the whole, long process, too. Schit, I can't even find my post on making 300BLK cases anymore...