I picked-up this hardly used 2018 7 shot GP 100 from a local shop last week. After putting a few cylinders through it, I noticed in one chamber area that the back of the case head was rubbing the back of the frame as it was coming into the firing position. It was tight enough to prevent pulling the trigger/cocking without a lot of force. I don't think this started happening until I had put a few cylinders through it. And it seemed to be in the same spot. I guess the cylinder isn't lining-up right and is out of sync? I haven't looked the gun over yet but does anyone have an idea of what's going on?
Thanks.
Thanks.