My favorite is a 300 WinMag because it is a good elk gun and it will handle a wide range of bullets.

A 270 is almost OK but comes up a little short on long range power. Within 200 yards it is fine.And many elk are shot at less than 200 yards.

I use a 270 as a backup rifle. Because I have one. If I only had a 270 and did not want to purchase another rifle, then I would use my 270.

Some claim that you need 1500 to 2000 ft-lbs of bullet energy at the range you intend to shot at an elk. I used this info when I bought my 300 WM for elk.

It mainly depends on how you feel about getting a new rifle.