You dropped some coin on chokes to learn what I could have told you (after doing the same thing myself
). That's my choice of hunting choke too for 1.625 oz of 9's and 9.5's.
Don't fire sell your 12's yet. You can achieve the same or better with a 1.625 oz 2-3/4" load out of a 12 ga. Same or lighter recoil depending on gun weight and generally lower pressures that allow margin for speeding up the loads (to 1250+ FPS).