just started to reload for my mini -14 .223 iknow they say it is best to use magnum primers because they are thicker , but you can only get what you can get right now ,i got some CCI 400 small rifle primers and remington 6 1/2 small rifle primers,some say the cups are to thin ,causing slamfire from the floating firing pin of the mini -14. will use h-322 for powder , any body used these two primers and have slam fires or other problems ?