Federal primer cups are soft. I do not know if it helps make any change in handguns, but they don't seem to be encouraged for use within a Garand. I bought 1K for 45 Colt and experienced the "challenge". Was pretty much to surrender on them, and skim a post https://federal-primers-for-22363940.acidblog.net/63066760/detailed-notes-on-federal-gold-medal-215m-primers