One of my open tops is giving me problems. I looked over the tuning of the Uberti Open Top and I just don't know.
I noticed that the rear portion of the cylinder was being marked, that is between the bolt holes and the rear edge, but otherwise it worked okay. Well, in the last match the gun started hanging up and the cylinder would not turn, or would stick and then over rotate. So I decided to take it apart and have a looksee. Without the barrel installed the cylinder rotates as it should with no hangs. As I slide the barrel on the frame and the alignment pins seat the jams come back. I read the portion about the fitting of the arbor and checked the alignment of the barrel pins to the arbor and it is real close to being perfect, but as the barrel seats into the frame, it appears to be putting pressure on the arbor causing the rear of the cylinder to drag. I made a gauge of newsprint and it will not clear the frame to cylinder behind the bolt holes with the barrel installed.
Any help would be appreciated.