Normal pistol primers will begin to flatten at about twenty~30k psi, according to manufacturer and magnum as opposed to regular. Taking into consideration a 9mm can run as higher as 35k psi for typical loads and nearly 38,500 psi for 9mm +P, there is no doubt . Then extract it https://winchester-41-small-rifle78012.blue-blogs.com/38929416/a-review-of-federal-primers-large-pistol