Regular pistol primers will begin to flatten at about twenty~30k psi, based upon manufacturer and magnum as opposed to standard. Looking at a 9mm can run as high as 35k psi for typical hundreds and as much as 38,five hundred psi for 9mm +P, there is not any doubt . https://waylondccbz.oblogation.com/31238015/federal-215-gold-medal-match-primers-an-overview