A friend gave me some .223 military brass. The brass is mostly Lake City although I found a few pieces stamped PMC. I'm doubtful that PMC makes military brass, but if I'm wrong please let me know. It appears that most of the Lake City brass has had the military crimp removed, but I did find some that look to be crimped. They don't match any photos I've found on the web. The brass is stamped LC 12, and it has four straight lines stamped into the brass on the four side surrounding the primer and the primer pocket looks to be almost square now. Could anyone fill me in on the military crimp thing? I'm guessing that the four lines stamped around the primer is just an alternative way of crimping the primer. Any info will be appreciated. I have an RCBS decapping die and a small primer pocket reamer. Thanks!