I bought some primers at Scheels yesterday for my .40 cal. When I got home, I realized they were small pistol magnum primers instead of the regular small pistol primers that I usually use. Is it possible to load safely using the small pistol magnum primers? Are there any issues? Currently I am using 4.8grains of tightgroup and getting around 1050fps with 180grs using the regular primers. Wanna kill these ads? We can help!