He had plenty of Federal large mag pistol primers along with the shop proprietor explained to me that Federal primers had been much better as they would generally go bang simply because they are softer than other primers. I have never experienced a challenge with CCI, but I purchased one https://winchesterprimersinstock80134.diowebhost.com/86940118/5-easy-facts-about-federal-no-210-large-rifle-primers-described