Killer Robot Uprising or the Pending Zombie Apocalyse camps, you should be stockpiling ammo! I recently ordered 1000 rounds of .308 for a really great price from the Sportsmans Guide.
"German Military issue, in battle packs, ready to rock und roll! 1990s production, full metal jacket boattail bullet, 147-grain. Brass-cased. Berdan-primed, with lead-less primer. Non-corrosive, non-reloadable, encapsulated DMIII bullet."
There are 200 rounds per sealed battlepack. Reliable and excellent quality. Shoots real nice in my AR-10. (Muzzle Velocity: 2,700 F.P.S. Muzzle Energy: 2,363 ft.-lbs.)
--Be prepared! Save some money!