My opinion on big game rifles and cal , it really doesn't mean a whole lot which one you use, that is, if you can shoot and place the bullet where it counts, then you will have a dead animal to field dress regardless if it is a Elk , Whitetail, Mule Deer or Pronghorn. Marksmanship works better than the particular rifle or cal you choose to use. There is no Big Game in the Lower 48 the 270 Win won't handle with ease if you use a good bullet and shoot straight.
