I would go with the 300 WSM it is more versital and its popularity will allow you to find ammo all over, maybe not everywere like the 30-06. My Ruger 77 MK II 300 WSM shoots well under 1" with my handloads and .5" on some handloads. My Barnes 180gr XLCs at 3000 fps will shoot a .6" group at 100 yards. This load is more than capable of killing anything on the planet. The 30-30 was used on everything up to and includeing moose before all of these new high power calibers came out.