Hawg, It wasn t speculation, a guess on my part. I was transcribing what Colt commonly stated.
Excerpted from a Colt.- Directions for loading and managing Colt s new model pistol,-
'The balls w i t h o u t w a d d i n g o r p a t c h are put one at a time upon the mouths of the chamber, turned under the Rammer (R) and forced down with the lever (L) below the mouth of the chamber, which hermetically seals it and prevents all possibility of damping the powder, even by exposure in water, . .'
This went for all of his arms of that type,- Carbines, pistols, .