I have used the cup and core Sierra GameKings in several of my rifles over the years, and found accuracy and performance on game to be exceptional.
I would still be shooting those 160 SGK's Federal loaded today in my 7 STW, if it was still available, having taken several head of game with them. Moose, elk, deer, mountain goat and bighorn sheep, from ranges of 30 yards out to 475.
It is the 215 gr bullet that I am currently using in my 338-06, getting 2750 fps and shooting 1/2" groups.
