Not to hijack this thread but a friend of mine that makes ammunition implies the Federal 210M primer. Why, I have no idea as he was striving not to provide me proprietary details. I'll utilize the Lee Hand Priming Device Once i get close to to using the Feds. Ken, https://cashtspkd.getblogs.net/64422258/5-simple-techniques-for-federal-gm-210-primers