Some pictures of my GrandDad's old Colt revolver and the cartridges that came with it. I believe it is a Colt New Army and the cylinder revolves counter-clockwise. I have shot low velocity .38 special 125 gr cast loads in this revolver but the cylinder alignment to the forcing cone/bore is pretty sloppy so I don't shoot it much.
There is a story about how I came into possession of this revolver.
The US Smokeless cartridges by the United States Cartridge Company are 145 gr. lead in Long Colt brass cases. The powder charge measured 3grains and looked a lot like Bullseye. When I put a match to it the powder burned progressively.
The Western Center Fire Cartridges are .38 special cases with 168 gr lead bullet.
The powder charge measured 16 grains, it was dark black, flake and when I put a match to it the powder did not burn progressively but went "poof" with a substantial cloud of smoke.
note that the boxes lids/bullets are in reverse, bad planning on my part.
Best
atr