A good sized bull elk will weigh 700-800 lbs. live weight on average.
A good sized Shiras Moose will weigh 800-1000 lbs. on average.
A good sized Canada moose will weigh 1000-1200 lbs. on average.
A good sized Alaska/Yukon moose will weigh 1200-1500 lbs. on average.
I am no expert but these are the numbers I have been told by those that do know and read in books by those that do know.
That Alaska/Yukon moose in Cabela's looks pretty dang big to me.
So did the elk and moose I have taken, though they weren't weighed.