Used to be a primer snob. Only Federal was good enough. As they got harder to find, I used Win, CCI, Rem and Magtech. Never had issues with any of them (except Rem like d_striker) in 40 S&W or 9mm, in any guns (no experience with revolvers though). When the primer shortage got really bad a few years back I needed small pistol primers and couldn't find anything but Tula. Got a great deal on them. I'm thru 10k of them with zero malfunctions and consistent chrono stats in tuned CZ's and 1911/2011's. Gave some to friends to try. They had the same results in steel pistols with hammers, though they were unacceptable in striker guns and revos. Sent from my iPad using Tapatalk