I have shot a few deer, take it or leave it with the Pro-Hunter bullets, one with a 270 and the other with a 338 wm, go figure the 338 passed through no expansion, and the 270 baisicly took the front shoulder off a deer changed directions and came out its neck a fist sized hole but it did exit, and broke the front shoulder.
I would not use a game king even though I have and it worked but it came apart, but the pro hunters worked ok for the intended purpose.
I currently have a really accurate hunting load reved up with my 243 with 100 g pro hunters I am going to use this year in the tree stand to see. I am sure it will work but it will be intresting to see what happens to the bullet?