Petty much all of them over pistol calibers. Personally for hunting I prefer a .444 because of the package it comes in, but a 6.5 X 55 you can argue would be the most accurate for most hunters due to it's mild recoil yet devastating effect on critters. The .30-06 is a good standby, for some it might be a little brisk, especially for a twelve year-old, but for the majority of people it is a very serviceable round. Then again, the .30-30 will handle 300 yards in a pinch too. 'Course the gents on this forum would agrue that one because it is too "old" school or not a 'super-duper-magnum' whatchamacallit or some off the wall caliber.