Never to hijack this thread but an acquaintance of mine that produces ammunition implies the Federal 210M primer. Why, I don't know as he was hoping not to provide me proprietary data. I'll utilize the Lee Hand Priming Software when I get all around to utilizing the Feds. Ken, the https://federalbenchrestprimers06280.fitnell.com/72731561/the-2-minute-rule-for-federal-gm205m-primers