I see a lot of 320, now I'm curious to try.
I've run Bullseye and Unique for my 9mm minor (115,124gr) and 45acp (160, 200, 230gr)
Bullseye meters better, feels similar to wst or sr7625 when shooting.
Fast burner, soft recoil. Bit dirty as some have mentioned, but not bad.
Tried some slower powders, Power pistol, HS6 etc but don't like them as much for minor.