I have some discontinued 180 grain Winchester Powerpoint Plus and some 180 grain Partition Golds that are grouping around an inch. You will love the 300 WM. I hear Hornady SST's shoot well in the Prohunter. I have both the Prohunter and the ICON in 300 WM, and the Prohunter handles the recoil much better than the ICON. The Prohunter recoils like a light 30-06 bolt action.