Long years in the past I went to using CCI primers with the magnum assortment. The only exception is CCI bench rest primers for the 204 Ruger. Therefore I have only one large rifle primer, a single small rifle primer and only large and small magnum pistol primers to stock. https://winchester250magnumprimer30466.digitollblog.com/31648896/not-known-factual-statements-about-federal-215-primers-100-count