A tool for use with a black powder gun (muzzleloader) is provided. The tool combines multiple tools useful to a black powder gun user in the field into a single unit. One embodiment of the tool includes a capper, a decapper (also called a deprimer), a bullet starter, a ramrod handle, and a ramrod push aid. Another embodiment of the invention includes a bullet starter, a ramrod handle, a ramrod push aid, and a socket wrench.