Standard pistol primers will start to flatten at about 20~30k psi, dependant upon manufacturer and magnum as opposed to normal. Considering a 9mm can operate as significant as 35k psi for ordinary hundreds and as many as 38,500 psi for 9mm +P, there is not any question . CCI 250 https://federal-205-primers-for-a15160.acidblog.net/63079091/federal-large-rifle-match-primers-options