Anything the 308 will do, the 30-06 can do better. As for the WSM's (all things being equal), the faster you push any bullet out of the muzzle the more felt recoil you will have to contend with. WSM ammo seems to run about double that of decent hunting-grade 30-06 ammo. You probably won't notice much difference in performance between the 308, 30-06 or the WSM's within 250 to 300 yards.

Just my .02