Black gunpowder — traditional black powder — is the classic propellant used in historical firearms and muzzleloaders. As a black powder pistol powder, it produces quick ignition, heavy smoke, and significant fouling, so pistols and revolvers loaded with it require thorough cleaning after shooting. Modern shooters often choose black powder substitutes for cleaner performance, but true black powder remains essential for period-correct pistols, reenactments, and certain competitive events.