I've heard people say that .50 cal. is not good enough for elk. Knight makes a .52 cal. that is supposed to be very potent.

I think .50 cal. should be enough though if you are patient enough to wait for the right shot, and if you are a good marksman. I have the T/C Omega, and it is outstanding. It is a magnum gun with a 28" barrel, plus the quality of being a T/C. If you have the bread, go with the T/C Encore. Then, you can collect barrels. Hunt elk with a 7mm, or .300 WM one season, then swap barrels and continue to hunt during muzzleloading season!