Regular pistol primers will start to flatten at about twenty~30k psi, dependant upon brand and magnum versus standard. Thinking about a 9mm can operate as large as 35k psi for typical masses and around 38,five hundred psi for 9mm +P, there is not any question . Add to quotation Only https://winchester-250-magnum-pri46790.tkzblog.com/31706784/about-federal-primers-large-pistol