However my my expierence the 270 is a far better choice for big deer. In all my years of using the 270, I have not nor even considered using it for varmits. I will agree that there is no reason it wouldn't work but as a dual purpose deer/varmit, the 25-06 would be my choice. But on another note, I feel the 270 is efficient for elk and moose as well.
So you maintain that the 25-06 is not a good choice for a larger deer,yet the 270 is a good choice for elk and moose?In other words a 120 gr bullet out of a 25-06is not a good choice for a 300lb deer,yet a 150gr bullet out of a 270winis a good choice for a 800lb elk or a 1200lb moose.I see a problem with that line of thinking.