I love sierra bullets, i use them for everything, but the MK's are what they say they are, they are meant for match shoots, so i would hope that you could shoot them with decent groupings. My opinion, i would shoot the game kings. Doesnt matter what rifle i load for, i have great accuracy with them and they are a hunting bullet. Granted, goats are not hard to kill, but if your going hunting i would shoot a hunting bullet.