Not to hijack this thread but a pal of mine that makes ammunition suggests the Federal 210M primer. Why, I do not know as he was attempting not to provide me proprietary info. I will utilize the Lee Hand Priming tool Once i get around to utilizing the Feds. Ken, https://beckettthdpu.blogpayz.com/31917315/helping-the-others-realize-the-advantages-of-federal-ammunition-primers