A few years ago, walking around a gun show, I picked up a 50 BMG round for a couple of bucks. I've had it sitting on my reloading bench ever since. I read about using one of these to straighten out a bent case mouth and thought I would give it a try. When I pulled out the shell, I got to thinking whether it was a live round and it so, was it anything to worry about. The bullet is painted yellow and pictures of the round and headstamp are attached. Anything to worry about? Thanks!