Target Sports USA (good to go) has cases of Wolf Gold .223 for $299.50 shipped. Best price I know of right now for good plinking and stashing ammo.
http://www.targetsportsusa.com/wolf-gold-223-remington-ammo-55-grain-fmj-wg59-p-4316.aspx
http://www.targetsportsusa.com/wolf-gold-223-remington-ammo-55-grain-fmj-wg59-p-4316.aspx