The 51 is a Western arms /Uberti from 1976. This is the predecessor company for Allen Arms which later came under Cimarron. Back then they had a bunch of old Italian Army Rifle stocks and were using them for grips. Action is nice and smooth and the finish is excellent- Case treatment looks more like bone charcoal than the process they are using now. The sight picture is crude and the trigger pull relatively heavy.
The 61 is a Curren tUberti using a .380 ball cast in a lee mould from pure lead. The charge is 22 gr/vol pyrodex p with no wad-covered with crisco. This is a mid 1,000 fps load.
It shot pretty well at sixty feet and 25 yards but I fizzled out at 40 yards.
http://www.gunpix.com/gallery/Muzzleloaders_and_Blackpowder/61navy60ft.jpg
http://www.gunpix.com/gallery/Muzzleloaders_and_Blackpowder/navy6125duelst.jpg
The Richard Conversion is chambered for .38 Special. Almost as promising as the 61 Uberti
http://www.gunpix.com/gallery/Handguns/Single-Action_Pistols/opentop.jpg