A deer/Elk combo gun? Either my 8mm/06 Mauser or my Savage 110 30/06. 6 to one 1/2 dozen to the other.
For deer only? My Swedish 6.5 X 55 Sporter or my 7 X 57 Steyr.
I currently don't have anything larger than my 8mm/06 or 30/06 to consider for an Elk only gun.
If I had a 35 Whelen or a .338 Win Mag either of those would do a tad better for a combo gun or an elk only. For me anyway.