Conventional pistol primers will begin to flatten at about 20~30k psi, dependant upon brand and magnum compared to standard. Taking into consideration a 9mm can run as superior as 35k psi for regular hundreds and as much as 38,five hundred psi for 9mm +P, there is not any question . https://federal-215-primers-100-c95158.tokka-blog.com/32074231/federal-gold-medal-215m-primers-for-dummies