OK, Not one of my prouder moments. I have an AR I built in 20P, getting ready for a P-Dawg shoot, kind in a hurry to try to make sure I had a good zero, I loaded in a round, first time fired, formed from a 223 Rem, sized down with Redding Bushing die, .225" final step. I could see there was some neck not completely sized down but we went for it anyway. Dropped the bolt release, squeezed, and click. I guess the lower part of the neck that the bushing couldn't reach stopped us from complete chambering. Had to get a mallet and a wood block to get the bolt back open and it took a piece of the rim off. Then I have the great idea to grab an old 17 cal cleaning rod (carbon) and pound it from the muzzle. It had some of the threaded brass left on the end, so I hammered it until it broke off even with the muzzle. So I made a bore guide out of a 17 Rem case, drilled a little and used a fine threaded sheet rock screw and got the rod out. Shook the power out and that is where we are now. Should I cut a 17 SS cleaning rod off a couple inches longer than needed, maybe wrap in vinyl tape or at least masking tape and try hammering it out with that or sent it off to a smith??? Any ideas? I am guessing a smith will drill out the primer, thread it and try to pull it out like it were stuck in a sizing die.