He had lots of Federal large mag pistol primers and the shop operator told me that Federal primers were better since they would often go bang as they are softer than other primers. I have not experienced a difficulty with CCI, but I bought 1000 Federals. All manuals do is https://winchesterprimersinstock49370.fireblogz.com/63226370/an-unbiased-view-of-federal-primers-ammunition