ballistics. that's how pathetic the 308 really is. If the 223 AINT enough for a given rifle job, the 308 win mag (in BAR) aint too much, either. In fact, it makes the 308 look really bad, and with the BOSS comp in the 9 lb BAR auto rifle, the 300 doesn't recoil any worse than the 308 does in a 7 lb bolt action.