That's great, thank you for that and also George A. Hoyem. Visually and by dimension it appears very similar to the Sharps 50-90 STRAIGHT. The rim thickness is noticeably thicker.
Will post back here once the rifle arrives and share more.
I did think to myself that I'd quickly see if I could buy a copy of both aforementioned books....how I laughed...


Let he who casts the first stone - be accurate.
If he cannot be accurate, he should practice first.