I think we could probably discuss the pros and cons of the MK as a hunting bullet without getting so personal.
On the one hand, the MK provides awesome accuracy potential because it’s concentricity is almost perfect. There’s also no lead point to get mashed and throw off the shot when you’re shooting for minute-of-gnat’s-tuckas. If you know you’re going to place your shot right through the deer’s heart or spine, I imagine the MK will work wonders, whether it expands or not. If you hit a rib, it’ll probably expand.
On the other hand…
Sierra knows that lots of hunters concerned with the highest accuracy use the MKs regardless of the warnings, and that’s why they make the GameKings to almost the same degree of perfection as the MK, to encourage the shooters to switch. They’re accurate enough that the GK has been used to win high-power matches. Plus the GK is designed to be used on game. Chances are, if you’re talking meaningful measurements, you’re not going to have more accurate MK loads than the best loads you can work up with GKs. Now I’m talking MEANINGFUL differences for hunting, not eighth-inch differences, which is an entire world of difference in benchrest, but no big stinking deal in hunting (I'm talking “big” game hunting, not prairie dog shooting).
A deer, elk or whatever is going to be no less dead if you hit him one eighth of an inch from the dead center of his heart. I’d venture to say that as much as a half-MOA is basically irrelevant in most hunting scenarios; if you’re hunting at distances that are far enough that a half-MOA difference means a shot outside the kill zone, I think you’re probably hunting at too far a distance to ensure a humane kill.
Semper fi,
Bruegger out.