The Walmart in Olathe, KC Metro Southwest, has Federal 55g FMJ 100 round bulk boxes for $39.95 and it looks like brass cases to me. I bought a box, so I guess there is a 223 in my future.
Also (shows you how long since I have been in that Walmart to look at CF ammo), is the Federal Red Box (not Fusion) the replacement for the Federal Blue Box?