I used 150 gr npt for elk in my 280. I'm working reloads now in 140, 150, and 160 gr. The 140's shoot tighter but I do like a heavier bullet. I'm sure you could use the same bullet for elk that you use for deer. Just use a good 150 gr bullet no need to go heavy.

I would hate to say go ahead a get one then it turns out it kicks just as hard and you are out several 100 and in the same boat so to speak. My 25/06 kicks harder than my 280 and they are the same rifle just different recoil pads.