Found out the hard way that some of my range brass had crimped primers. Results cost me replacing decapping pins and sadly one whole insides of resizing die. Used RCBS dies. Bought a Lee decapping die. It has worked on a couple thousand pieces. Lesson two. That same piece of brass had a primer pocket that needed detailed. Curses. Ruined some primers. Yeah, lessons learned to ease up on the press and use the right tools properly. Splurged for RCBS competition dies in .223. Access hole allows my placement of the bullet quickly and accurately plus love the ability to adjust seating depth with greater control.