With a lot of Elk and Moose to put on the plate, out of your suggestions, I'd go with the 300 WSM.

If you already had a good medium bore, and just wanted something dedicated to the Elk and Moose I'd move up to the .338 Win Mag.

You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.

You cannot over estimate the unimportance of nearly everything. John Maxwell