He had lots of Federal large mag pistol primers and the shop operator advised me that Federal primers have been better given that they would generally go bang given that they are softer than other primers. I have not had a difficulty with CCI, but I purchased one thousand Federals. https://israelkynmi.post-blogs.com/53043614/the-fact-about-federal-no-210-large-rifle-primers-that-no-one-is-suggesting