Although I do not have a Pro Hunter (which I know has a longer barrel), I have the original Encore. 110 grains of ffg T7 with both the 300 grain Hornady SST's (for my caribou hunt this fall) and T/C XTP's in 240 grain have produced good groups. I have tried from 90-120 grains and 110 appears to be the best in my gun. Off a bench, I can produce solid 1.5" groups at 100 yards with this combo. Good luck!