I myself load with magnum primers Once i intend to hunt in zero to sub-zero climate. They supply much more reputable ignition under those conditions and, with common LR primers, I've experienced misfires under All those problems when looking (within the even worse feasible time, by the way) 308stillbrass reported: https://knoxxdqbm.blogdomago.com/30690284/the-ultimate-guide-to-cci-200-large-rifle-zündhütchen