I have a gay 6.8 SPC and it seems to be about 250 savage power, I live in a wooded area and hunt deer at relatively close range thus the Grendel did not seem to be necessary and loaded ammo had not been spotted. The big recommendation to me was I can go buy two boxes of loaded 120SST's right now at the Academy sporting goods store. I have no idea how far a 120SST out of a 6.8SPC would be effective, but under 100 yards the 85TSX kills OK and I am going to try the 95TTSX this year.