I'm just getting setup to reload .223 and need some advice on some problems with bullet setback. I have Dillon dies and I am full neck-sizing - the sizing die is touching the shell holder at the top of the stroke. However, when I seat the bullet, it only takes a medium amount of pressure to push the bullet back into the case. I am using 55 grain spitzers without a cannelure and seating to the suggested depth in my Lyman manual (2.260). When I load a dummy round (everything the same but no primer/powder) into my AR it feeds fine but when I extract the bullet has been pulled about .005 further out of the case and my OAL is 2.265. Any ideas? I don't know how I could size it any tighter. In fact, I have even taken the expander ball off of the decapping stem. Thanks guys - I appreciate it. Husker