Answer by
Hpd (63)
Both the 30.06 and 308 shoot the same size bullet - it is 0.308 inches in diameter. However, the case of the 30.06 is larger, and thus holds more gunpowder than the case of the 308. Therefore, while the 30.06 and 308 can shoot the same bullets, the 30.06 can generally shoot them at a slightly higher velocity.