Google Cheyenne Brass located in Cheyenne, WY; I've bought once fired .223 commercial brass from them before. They also sell other supplies. Once fired commercial brass will save you lots of money versus new brass. Another hint, make sure you small base size each shell if you're shooting it in an automatic. Once you've fired the reload in your gun I then only neck size the shell (this saves you the lube process and thus saves time) which requires the purchase of another die but it's well worth it. I also invested in a drop-in gauge to check the shell after firing. So far, after reloading 5 times, no stretching of case and 100% reliability. Darrell