We have, a .270 WSM Tikka and a 6.5 PRC Savage, UltraLite / Proof, barreled, in our Family as, we Hunt Elk, too ( Both shoot, Great ! ),..
But for Whitetails, I'd look hard at, a 7mm-08 for, more than, TWICE the Barrel Life and, it's, "Plenty" to 500 yds or, so with, good, high BC, 140 - 160 grain bullets, my 2 cents ! The 150 gr. Eld-X was, a good "Shooter" in my son's 7mm-08 Tikka. He even dropped, an Elk with, the ELD-X bullet.
And StaBall 65 or, RL-17, "Moves" them along,.. good !
The ole' .270 Win., is still, getting it done, too ! So NO, "Bad choices" amongst these, 4 Cartridges