If you choose to use that .270, I' d recommend that you use a Swift 150 grain A-Frame bullet.

I have friends that use the .243 and another friend that uses a .300 Savage for elk. Neither has lost or wounded an elk!!!

Roy Weatherby used the .257 on elk.....and I personally believe the .270 Winchester is a far superior cartridge.

Given my pick, I' d use a bigger gun.....buy since you have a .270 and you shoot it well, you' re in good hands I' d say.

Go back and read elkkampmasters comments.....it' s superb advice