Very long many years ago I went to using CCI primers on the magnum wide range. The one exception is CCI bench rest primers for that 204 Ruger. Thus I've just one large rifle primer, one small rifle primer and only large and small magnum pistol primers to stock. So https://josuewvrmf.wizzardsblog.com/31804682/5-easy-facts-about-federal-no-210-large-rifle-primers-described