I agree with the comment about using 140 grain .270 loads. That kinda his the best of both worlds. The only downfall is that not many companies factory load in 140...I know Hornady does, but not sure about anyone else.
I killed my best buck about 10 years ago with a 140 grain .270 Hornady SST.
Lol. They are both great rounds. My dad shoots a 30-06 so now I can just steal him ammo. :) that is why I went with the 30-06. I also believe it is a more versatile round then the .270 but that's my opinion.