I like the 280. AI just makes it more fun. Run regular 280 loads in it if you like.
I'd love to see the animal killed with a 7rm that wouldn't have died from a 280. Or vice versa.
Best part of these threads is watching Bobin pop a vein.
I've killed game with all of them. Big bull elk and Moose included. Bob is right. If I was going to get serious about just one it would be Remington's magnum.