I thought the same thing wobbly. I enlarged closeup of breech, looks like a flint style patent breech for the hook. I have used this arrangement, with drum and nipple on a Plains style build, but DANG sure haven't pulled this stunt. If plug is solid,and I hope it is, and the drum is just forward the face of the plug, hopefully there are a few solid threads before screw passes through. man,whatta chore drilling through all that.
Sad thing here,to me, is, as much work building and fitting this type or gun is, some time spent on educating ones self, preferably here, would be well spent
Reminds me of a similar style 58 cal with a 5/8-18 plug.
have a goodun, thanks, Justin ,for the post. I need a drink. best regards, Dave F