I myself load with magnum primers when I intend to hunt in zero to sub-zero weather. They offer much more trusted ignition below those situations and, with normal LR primers, I have had misfires under People problems when hunting (on the even worse probable time, by the way) 308stillbrass said: https://cristianvzyxw.mybjjblog.com/a-simple-key-for-federal-large-rifle-unveiled-44670979