IIRC, the Lee Web page has current the listing about which primers are Alright to use. They now manage to single out FEDERAL especially: I purchased 1K for forty five Colt and had the "issue". Was nearly to surrender on them, and skim a post about using a deburr tool https://winchesterprimers91233.spintheblog.com/32217910/federal-large-rifle-match-primers-things-to-know-before-you-buy