Sighted at 200, ballistics comparison at 500:
270 130gr BST: 2171 fps, 1361 ft/lbs, 5mph drift: 8.1", drop 36.1"
25-06 110 acc.: 2177fps, 1158 ft/lbs, 5mph drift: 8.3", drop 35.5"

As you can see, not much difference. By the time you get far enough out its not about which gun but whereYOU can put the bullet.