IIRC, the Lee Web page has up-to-date the checklist about which primers are Okay to work with. They now appear to single out FEDERAL precisely: Rationale I performed all around Using the Fed210 primer was due to the fact for some brass wherever the WINLR just felt loose, the Fed210 https://federal-ar-match-primers41006.blogrenanda.com/37959158/how-federal-gm-210-primers-can-save-you-time-stress-and-money