I own both the 06, and the .270, I voted for the .270 for the simple reason I know the .270 shoots a much flatter trajectory over a much longer plain than the 06. I've shot whitetail, muleys, elk, as well as antelope, with the 270, and incidentally one of the antelope I shot was at close to 400 yards according to the range finder. Now I'm sure the 06 is quite capable of doing the same, however I feel much more comfortable using the .270, rather than the 06. BTW I've shot deer and black bear with the 06, back in N/E Wisconsin, but having lived in the western part of the U.S. I just believe good ole Jack O'Connor knew what he was thinking when he developed the .270. Thus I voted for the .270.