Hey Jim, thanks for all the data. I have a completely new DPMS .223 AR-15, have not shot it however. I in fact bought it a few decades back as well as a new Dillon 550b press, the AR was set in my Secure and The brand new press was https://arthurdkpua.worldblogged.com/29400946/the-ultimate-guide-to-223-bullets-for-sale