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.