Not to hijack this thread but a colleague of mine that provides ammunition suggests the Federal 210M primer. Why, I don't know as he was making an attempt not to offer me proprietary details. I'll utilize the Lee Hand Priming tool Once i get about to utilizing the Feds. Ken, https://federalarprimers17304.anchor-blog.com/12129835/the-ultimate-guide-to-federal-large-pistol-primers-no-150