Gents (and ladies that may be lurking out there) None of you has even come CLOSE to the worst handgun!
Of great infamy, I introduce you to the pot metal specials, capable of being melted with a birthday candle, as reliable as a meth addict, and all the quality of the Ford Edsel.
The RG revolver
and the Clerke revolver
But the title may belong to this bad boy- The Gabbet-Fairfax Mars pistol. From around 1902. Around 900 ft lbs of energy. Twice the barrel of a 1911. Caliber .450 Mars- a bottle necked round with incredible penetration.
Problem was an action that recoiled half the length of your forearm, recoil so severe that members of the test board refused to shoot it a second time, incredibly complicated action. Firing it was described as resembling a pistol exploding, due to muzzle blast and flash.