Normal pistol primers will start to flatten at about 20~30k psi, according to manufacturer and magnum versus typical. Thinking of a 9mm can run as significant as 35k psi for typical loads and as many as 38,five hundred psi for 9mm +P, there is not any question . I do https://federal-ar-primers96272.liberty-blog.com/31937431/about-federal-primers-for-9mm