noway

Bear,
If you don't mind recoil and plan to do a lot of elk hunting either of those would be fine. Both are on the upper end of what is really needed for elk.
Unless you are hunting in really open country or canyon lands most shots are elk are under 200 yards.
At that range the 30-06/270/280 with heavy bullets for the caliber do the job just fine and are much more versatile calibers.
If you are one of the lucky guys that can afford lots of different rifles, why not get another one.
If you are set on a magnum and even a little recoil shy you may think about the 300wsm. Plenty of power and supposedly less recoil than other 30 magnums. Good luck with whatever you decide on.