I'd suggest searching out a Leupold 6x with the long range duplex (LRD). But they're out of production and the guys who have them are not often interested in giving them up. Mine is currently on an '06 and has been a great scope.
The LRD has a design flaw for a medium and big game scope -Leupold used the wide duplex reticle's spacing for the LRD's horizontal axis instead of the Leupold duplex/ heavy duplex reticle's ideal 4.5 inch per hundred yard on either side of the vertical element. The duplex/ heavy duplex spacing provides a good reference for windage holds, which the wide duplex doesn't unless you're shooting a .22 LR to 300 yards.
For a .270 zeroed so the bullet is about 2" high at the peak of its trajectory, the standard duplex and heavy duplex will take you to 400 yards for elevation holds between the crosshair center and the post at 6 o'clock. The duplex and heavy duplex trump the LRD and definitely trump the wide duplex for medium and big game hunting.
