Great use of new technology! You think outside the box. Market them. Good niche market. A lot of black powder shooters out there. I ran into a similar problem buying an old Knight M93 inline 50 cal at a pawn shop for $50. Good bore , cleaned up nicely. But it had a breech plug for musket caps. Musket caps were nowhere to be found and if you did find some, prices were exorbitant and they were unreliable. I couldn’t find a regular no 11 cap breech plug either. So it’s sits in the closet until I find either in my price range.
I'm not familiar with that setup but a person could 3d print musket caps too, or maybe have the nipple turned down to fit number 11 caps?
