At the time I didn't know any better about the ammo. It was an old A1 upper that I bought used with the lower I wanted. I had now idea of the history of it. So I sold it as a barely functioning upper with possible problems. The guy who bought it cleaned it with a honing tool in the chamber to get rid of the laquer, and reported it shot and exctracted fine. (I sold it on the original AR15.com, many years ago.) It was a deal for the guy I sold it to, and I got rid of a suspect upper. I DID use brass ammo in it for function testing. The brass would stick, and I would have to slam the butt of the rifle with my fingers on the CH to loosen the spent rounds.
So yes, I was ingnant. This thread is not about how dumb i was, but about the ammo. The ammo causes enough problems that it should be used only with your full knowledge that it can get stuck in your chamber and cause brass rounds to get stuck in your chamber.
I'll take the flames if it saves someone the frustrations I have gone through!!