Man, I've read this same discussion so many times about the ballistic tips it almost makes me sick.
I've shot quite a few of them as well, and in my opinion they arent a proper big-game bullet.
The expend all the energy in the animal is a ridiculous theory and anybody that believes that shit is likely to also still believe in the tooth fairy, easter bunny etc.
The one question I always have with the bullet staying in the animal on a broadside shot theory is how can it still be expected to perform when a large bone is hit or when a raking shot is taken? That bullet simply can not perform in both cases.
The point is, any bullet that fails to exit on a broadside shot, even hitting ribs on each side, simply isnt enough bullet.
In a couple years time I killed a bull moose, 2 elk, one black bear, a dall sheep, and several deer with the 200 grain BT in the 338. I found they worked ok on deer and always exited, as well as the dall sheep. On the bear, elk, and moose I didnt get a single pass through. Luckily I had adequate snow on each of these otherwise tracking the two elk and the bear would have been a real pain in the ass. Hardly any blood flows through a 338 caliber hole and there was very little blood in all cases. I spined the moose so no tracking was required, but the bullet still didnt make it through the spine.
I had seen enough and I'll never shoot them again. Those bullets will cost you game unless you're a really good tracker and you never hit a big bone or take anything other than perfect broadside shots.
However, they are good varmit bullets and they are accurate.