I appreciate the tongue-in-cheek replies, I was trying to be silly but still make a point. That point, in series:

1) The "big caliber" crew draws the line on elk at 7mm magnum.
2) Premium bullets have come on to the market claiming drastically better bullet performance. If that's true; then
3) Clearly the new "bottom line" for elk, according to the "big caliber" school, should drop below the 7mm magnum. Finally;
4) Anyone in the big caliber crew who disagrees with the conclusion of #3 has got a major logical inconsistency if they have switched to premium bullets. (i.e. What are you paying the extra money for?)

For me, I'd happily take a .243 after elk if I had to, preferably with premium bullets. I would simply exercise the same self-control required in bowhunting, to limit my shot range and angles. If I put 100 grains of bullet into an elk's lungs, it's dead. And then some.