You mentioned wanting to cut the barrel down on your 'snake pistol'.
If you notice when your looking at a Cap & Ball revolver, they all have a loading lever built into them.
It hangs under the barrel and engages a latch to hole it in place.
If you cut the barrel off you will need to also cut off the loading lever and reposition the latch, or totally remove the lever.
If your loading a lead roundball into the chamber, the ball must be slightly larger than the chamber.
While ramming it into place with the loading lever a ring of lead will be sheared off making the ball exactly chamber sized. Then, while compressing it against the powder the ball will become a tight fit in the chamber.
This is what keeps the balls in the unfired chambers from moving forward as the gun is fired.
This shearing of the lead ball takes quite a bit of force and if the loading lever is cut off, using the short loading lever will be a real PITA.
While removing the loading lever sounds like a easy solution, carrying it around and then having to reinstall it every time you want to reload the cylinder will also be a real PITA. Especially after you loose the screw that holds it in place.
In any case, whatever you come up with for a snake load will have to be pressed or wedged into the chambers well enough for it to stay in place while the pistol recoils.
Something to think about. :hmm: