020 oversize nipple (Track of the Wolf # ROS-20S) your gun will be back in operation.
270-28 tap (#Tool-Tap-20) will fix the hole. 234 diameter drill (15/64 diameter) and cleaning up the existing hole and then retapping with a Track of the Wolf. 035 worth of thread between the minor diameter and the major diameter. 234.Ī 28 pitch thread needs to have about. 235 outside diameter with about 25.4 threads per inch.Īs the threads in the drum are badly damaged I must assume there isn't much if any threaded material in the hole so, for all intents and purposes lets say there is just enough material to make a minor diameter for the new thread of. The Dixie Catalog says the Spanish Rifles CVA (Jukar etc.) use a 6mm X 1 threaded nipple.
