The Pedersoli Derringer Philadelphia in .41 caliber is a small-bore percussion derringer-style pistol that more closely approximates the bore size of surviving documented Henry Deringer originals than the more common .45 caliber version. The .41 caliber was the standard bore for original Deringers and requires a correspondingly smaller ball mold. Type: Pistol Action: Single Shot Caliber: .41 Cal Capacity: 1 Year introduced: 1985, Italy Weight: 12 oz Overall length: 7.5" Status: Active Intended use: collector, historical