Lots of great recommendations but I believe with elk in the equation you need to stay large 7 or bigger for sure. No way shape or form saying the 6.5 whatever flavor won't dispatch an elk . Just the bigger the projectile going in the bigger going out it should be. With more wallop .
I'd personally go 338 caliber my self . It's not to hard to practice and get good with recoil . Don't go burn through a box of 338 rum the first time out . Shoot maybe 5-10 rounds put it away for a couple days then repeat it won't be long and you should be more than capable with the rifle and recoil. It always tickles my fancy when you read we're someone recommends said cartridge because less recoil equates to better marksmanship. No more practice does that and yeah with less recoil you for sure will shoot more . But during all this extra shooting that's being done we should be trying to learn to deal with the recoil. And get accustomed to recoil and muzzle blast
I'd personally go 338 caliber my self . It's not to hard to practice and get good with recoil . Don't go burn through a box of 338 rum the first time out . Shoot maybe 5-10 rounds put it away for a couple days then repeat it won't be long and you should be more than capable with the rifle and recoil. It always tickles my fancy when you read we're someone recommends said cartridge because less recoil equates to better marksmanship. No more practice does that and yeah with less recoil you for sure will shoot more . But during all this extra shooting that's being done we should be trying to learn to deal with the recoil. And get accustomed to recoil and muzzle blast