Derringer kit is considered skill level 2. Fullstock made from beech. Barrel is a. 45 caliber, 3 1/8 octagon. Webnov 3, 2014 · the philadelphia deringer is a small percussion handgun designed by henry deringer and produced from 1852 through 1868. The term derringer is actually a. Webthe pedersoli® philadelphia derringer pistol kit comes with the originally designed 3 1/16 barrel, case hardened steel components and percussion lock and beautiful brass. Webpk0863 philadelphia derringer kit (pedersoli). 45 caliber 3 1/8 tapered octagon barrel. . 750 at breech to. 700 at…