The useful comments are appreciated; I can't argue against any of them. I've used mostly Barnes and a few Partitions over the years for elk, always with good results. Just curious about the 200 Sierra GK; seems like weight and bullet construction would be heavy enough to hold together fairly well if fired with a muzzle velocity of no more than around 2800-2850 fps in a .300 magnum. I enjoy trying new bullets, but perhaps I should stick with what I know works for elk.