Reading this thread from the beginning, it took longer than I thought to get derailed.
I'd happily spend the rest of my life hunting with either the 260 or 7-08 and know for certain I'd never see a difference.
Me, I've decided to spend the rest of my hunting life with the 308, but that's just personal preference.
308 based rounds are just more fun to shoot and load for than 06-based and magnum cartridges.
More fun = more shooting.
More shooting = better shooting.
Better shooting = better kills.
Killing stuff just isn't that hard...