Is anyone familiar with this or does anyone have one. It is for opening up the front end of a shotguns chamber to allow the shell head to fit. The diameter is .890 with a 55 degree taper for the leading edge.
I bought a set of barrels and they needed to be fit. The dimensions of my old barrels third bite and this barrels bite are the same. Distance was different from end of breech to hinge pin on new barrels. Had to file .025 from breech to make barrels fit and now have to make this area where shell fits deeper to accept shell and let ejectors fit when closing gun.
This is the term I found in an L.C. Smith book and it gives dimensions for both a hand tool and a machine tool.
In order to keep tool straight a pilot would have to be made for chamber size.
