jay,

That is an excellent rifle and caliber choice. The 30-06 shoots flat with the 150 grain bullets, and hits hard with the 180 grain bullets. Folks I know with X-bolts rave about accuracy. The 165 grain offerings (especially the accubond) are tough to beat all-around, but don't overlook 150s in a "hard" bullet like the Barnes X-bullet. Barnes and Cor-Bon both load X-bullets in factory ammo. I would recommend finding a few boxes from different manufacturers, and finding which one your rifle shoots the best.