7x64 the European equivalent of the 280, but I see not much difference between it and the 06 recoil wise, and the 06 does have the heavier bullets, if that matters. I'm sure a 280/7x64 with 175s going to have the same recoil, as an 06 with 180s. So I'd go with what's easier to get ammo for and is recognized as a great round.
