You can always get the 6.8-08 which is a 270 on a 308 case.
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ARMED Performance ? In what way. They both kill very well with the right bullet weight and construction for the game intended.
Both are fantastic calibers, I'd lean more to the 7-08 if you reload. I shoot mine out to 800 yards all the time. Less recoil than the .270, better bullet selection, shorter action.