Скачать или смотреть Muzzleloader gunsmithing. Truing the breechplug seat.

This tool will aid in properly fitting a breech plug to a traditional muzzleloader barrel. It will clean up/true or deepen an existing threaded beech plug seat without damaging the threads. It requires a minimum of tools, no lathe or other heavy machinery needed though a drill press is an aid. This is for a 5/8" breech plug thread. Larger or smaller threads will require the proper drill rod size to match the tap drill size or a few thousands smaller. A 3/4 thread will need a 11/16 drill rod. Using the proper size will make the tool self aligning with the threaded hole so that the breech plug can seat against a flat surface perpendicular to the threaded shank of the plug and seal properly.