Hey guys have a question for ya. My dad reloads just about all the major wheel gun/pistol rounds. Winchester 231 is what he typically uses. I just got a Glock 20SF so he is going to dabble in the 10mm. Ive read that 231 is not the best powder for the 10mm. Ive heard unique and AA #9 work well. Any opinions on what you guys use and like would be helpful. We will be loading copper plated 180grn flat nose. Would like them above 1200fps. Thanks again. Wanna kill these ads? We can help!