Three barrel pistol by J. BORTON

[corrado26]

Originally Posted by kronckew

Rather deep rifling! .

This rifling was not for getting the balls spin but was just the negative form of a key that unscrews the barrels.

The room for powder behind the unscrewed barrels is as I think really big enough for an effective shot. The bullets which are loaded from behind had the same calibre as the barrels and so there was no space between the bullet and the barrel - no gas could escape and so the shot on short distance was certainly very effective. You should not underestime the skill of the old gunmakers