Cabelas online has some good deals on PMC .223 boxes and 50 round CCI packs (limit 1 on the .22).
If you ship to store, shipping is free. That's 40 cents a round for 223 and 8 cents a round for 22lr.
Cabellas .223
.22lr CCI Cabelas
If you ship to store, shipping is free. That's 40 cents a round for 223 and 8 cents a round for 22lr.
Cabellas .223
.22lr CCI Cabelas