I will be buying a new rifle this spring mainly for deer and have pretty much narrowed it down to either a 25-06 or 270. But here is my question.

I was leaning towards the 25-06 just because of the lighter recoil than the 270 (i like to shoot so i will be at the range fairly often) and also because with the 25-06 i have seen varmint rounds in the 80 grain weight range where i haven't seen anything like that for the 270. (i know a 130 gr .270 will drop a coyote flat) however would the rate of twist of the barrel of the average 25-06 about 1 in 10 for say a 120 grain bullethave the same effect as with a 75 or 80 grain bullet???

Will there be any decrease in productivity of the 25-06 80 grain round? or should i just stick with the 270 and drop em flat.