With a full power load I think the stock design is going to be more important than the round chosen. If your handloading it would really eliminate any consideration of what is the best round, just download to what you need.

I do know that a .260 can push the 95 vmax at about 2400fps with bluedot and it will expand nicely without fragmenting. That was a load I build for an older neighbor to take blacktail with. He had very bad shoulders and I could not convince him that deer will fall just fine to a .223. That load was about the softest round with the mildest report I have ever fired from a centerfire. Im guessing it could easliy be duplicated in any of those choices.

Hunt hard, kill clean, waste nothing and offer no apologies.

"In rifle work, group size is of some interest...but it is well to remember that a rifleman does not shoot groups, he shoots shots." Jeff Cooper