Why did you feel the need to ask the question. You must feel like its a borderline cartridge or you wouldn't feel the need to ask.
Or it could be that some nimrods have told him that you can't kill an elk with anything less than a 30 caliber magnum or larger. He knows better but wants a little verification.
Is it "more than enough"? Hell no.
Is it adequate? Yes, but by a slim margin.
I have to disagree 100%. Yes it's more than enough cartridge and certainly more than adequate.
I still wouldn't consider it to be the 'best' elk and moose gun but it is definetly up to the task.
HFF, look at what the rest of the world uses to hunt similar sized and tough animals (6.5X55mm, 7mm Mauser, .303 Britt, etc...)and you will quickly realize that Americans are about the only ones that are hung up on 'needing' magnums to kill animals.