The three legged hone was a very close fit. In fact, the specs say it is bigger than the bore of the chamber. It wasn't. Of course I used oil and I think I removed one or two thousandths from each side, no more.
It has been fun and I learned a lot and I do appreciate all the help I received from you all. The collective knowledge here is amazing. The gun is running and sometimes it is best to leave alone things that work so I will now just use it and enjoy it. I suspect it was the chamber roughness and if its ugly head re-emerges I will try the orange rubbing compound routine.
