BTW; My remmie is still a C&B.
I finally opened my copy of REMINGTON LARGE BORE CONVERSION REVOLVERS, by R. Phillips. It is #218 of 250 on page 73 & 74 he describes a "Gamblers Special. It is a nickel plated "fourth type" conversion in .44 centerfire, six shots. The barrel was shortened to 4 inches. The frontsight is a "bead post". The loading lever has been removed, as well as the cartridge ejector rod, with only the ejector rod tube remaining. The cylinder pin is retained by a neat spring-loaded catch that retains the cylinder pin.
Phillips refers to the 6 3/4" conversion pictured by McDowell, as problably having had the barrel shortened due to barrel wear.
In his opinion, just like gun owners today, once a firearm leaves the factory, pretty well anything goes, whether caused by whim, breakage, or by parts loss.