I think the choice of bullet would have more to do with hole size then the differance in cal.
I was using that; Mass in motion tends to stay in motion. Mass at rest tends to stay at rest, thinggy.
A 130gr blistic tip most likely wouldn't out penetrate a 115gr barns X-type bullet.
As you said; It doesn't matter on Deer. A 30-30 is way more then enough.
The Q was; Is there any real difference between the 25-06 and 270 win?
The only answer I have is, penetration. And I'm sticking to it. <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />
