The 270 Win shoots bullets of similar weights about 175fps faster than the 7-08 at the same pressures, barrel length etc etc. I am using a 140g bullet as a common baseline to make that generalisation.
If that is worth the bit of extra action length, weight, powder burned etc then that's good for you.
Either would work for me.
Cut that number in half and you're probably a lot closer to reality, but whatever. Both work out to a long way.
