Did Booth have another pistol?

[AussieMick]

Great point, Bill

The use of a derringer (spelling has changed over time) seems to have been quite a rigmarole ...
Wikipedia has this
"For loading a Philadelphia Deringer, one would typically fire a couple of percussion caps on the handgun, to dry out any residual moisture contained in the tube or at the base of the barrel, to prevent a subsequent misfire. One would then remove the remains of the last fired percussion cap and place the handgun on its half-***** notch, pour 15 to 25 grains (1 to 2 g) of black powder down the barrel, followed by ramming a patched lead ball down onto the powder, being very careful to leave no air gap between the patched ball and the powder, to prevent the handgun from exploding when used. (The purpose of the patch on the ball was to keep the ball firmly lodged against the powder, to avoid creating what was called a "short start" when the ball was dislodged from being firmly against the powder.)

A new percussion cap would then be placed on the tube (nipple), and the gun was then loaded and ready to fire. (The half-***** notch prevented the hammer from falling if the trigger was bumped accidentally.)"

I think (not sure, must have read it somewhere ) that every derringer came with its own bullet mold and every bullet had to be hand-made.