This forum has taught me a lot about reloading. It was invaluable when I started back in 2013. My reloading practices are so basic. Find what works and stick with it. I’ve loaded probably 1500 cases with non magnum primers, half CCI and half Federal. The ones I have shot so far have fired no problem. I mistakenly bought the CCI 450 magnum primers but now I find they’re recommended for AR so I’ll try to stick to those from now on. In these days of primer drought craziness we can’t be picky but I have ruled out using the 6 1/2 Remington. Just goes against my whole “stick with what’s safe” philosophy. Slam fires, pierced primers, damaged bolt and firing pin, maybe ok for pistol maybe not. Who needs the hassle? They’ll sit in the cabinet until I can find a way to trade or sell them. They’d already be on GB if it wasn’t such a hassle and expense shipping them.