I bought two flats of 100 ct Winchester Small Pistol Primers while at Bi-mart today only to get home and discover that they are Small Pistol MAGNUM Primers. So... Since I cant return or exchange them I would like to trade them 1-1 straight across for non Magnum SPPs. I considered using them and loading a little light but I am brand new to reloading and they will be fired out of a S&W Shield and I would rather not push my luck. FTF Beaverton/Aloha area please.