I think if I had to do it all over again, I'd only have two or three rifles total for big game.
Two 7x57s. One wood/walnut classic, another stainless/synthetic and another in 300H&H for moose.
Have only taken one moose with the 7x57, but it worked fine in Alberta a few years ago. (Have also taken probably a dozen other species of big game with the round in places from Alaska to Africa, usually but not always with bullets in the 160-grain range.)