I firmly believe that the 6.8 SPC is far underrated for low recoil vs on game performance and efficiency. Some 120gr SSTs or 110 S&B PTS, and it’ll do all I ever did with many other case/bullet combos, to 300 with far less recoil and muzzle blast. Nothing wrong with the Grendel, 223, 300, or others, but my anecdotal experience always kept me coming back around to the 6.8.