06' can load it up or down to suit your fancy and will take anything on the continent.
.270 is a more limited range of bullets and cant get as heavy as the 06' .... plus if you ever head up north you will want 180gr or larger for moose, bear, musk ox, etc... i would want to carry an 06'...
i also do own a model 70 (circa 1979) in 30/06... great gun and great chambering... walnut stock, period correct pachymar pad, iron sights, beautiful bluing, and has warne bases and quick disconnect rings with a nikon monrach 3-9x40 BDC. .. great gun for anything and love the iron sights for the close shots or if something were to happen to my scope (i dropped a rifle during a mt goat hunt years ago and it landed right on the scope, rendering the scope in operable). didn't have iron sights and had to borrow the guides gun to make the shot.... lesson learned and I will always have iron sights on a hunting rifle and also quick disconnect or see thru sights so I can easily transition to the irons.