I'm not sure how much better this is than the Tulu ammo at walmart for 4.97 bx (if they have it) but thought I would post this out there for you all to look at. At least these are FMJ for .3495 cent a round and a flat $7.95 shipping on what ever you order no matter the weight.
http://www.outdoorgearbarn.com/p-21646-ammo-pmc-223-remington-55gr-fmjbt-20-rounds.aspx
http://www.outdoorgearbarn.com/p-21646-ammo-pmc-223-remington-55gr-fmjbt-20-rounds.aspx