325wsm - Running short on magnum primers - have plenty of standard rifle primers. Do you all think I'd be fine with the substitution as long as I stayed out of the really cold weather? Thanks!
I think you may be alright, as long as you're using a stick powder. Most of the load data I've been able to see for the 325WSM uses either WLRM or Fed215 primers, but Alliant did a lot of work with RL15 & RL19 using the Fed210. Velocities were in line with what you'd expect, so I can only assume it was a workable deal, since they published it, and it's not reduced loads. Good luck.
I use WLR and F210 in several loads in my 325 WSM. Because of the short powder column, you will have no problems. In very cold weather (say -30 or lower) I prefer to use magnum primers, or if I am using ball powders. Otherwise, large rifle primers will work just fine.
I use H-4350 and WLR primers for my 325WSM loads. I have shot them at the range in 25* weather without issues. I agree with Dr. Mike in using a mag primer with ball powders, certainly at these charge levels.