I accidentally grabbed a box of Large Pistol Magnum primers at the local sporting goods store, it was mixed in with the other large pistol primers and didn't notice until I was home. Is there any dangers to using magnum primers with non magnum powders? If it's any help the only round I reload for with large pistol primers is .45 Colt in a Ruger Blackhawk. I use Unique powder with 250 grain Berry's bullets (yes I know it's not the "best" or fanciest powder out there, it's what I like to use, I only add this because every time I mention I use Unique someone chimes in that it's a terrible powder choice.) I don't load max hunting loads just casual plinking rounds.