I have been reloading several years for the 45 ACP 1911 type pistols,
I have used Bullseye (the dirtiest powder there is) Unique a little bit cleaner,
Win 231 , Clays ,Universal Clays and now am using Winchesters WST and
am staying with it. Gives me very accurate loads and is super clean!
Try WST I think you will like it a lot!

Just my 2 cents!
Regards 6.5