Cartridge decapping tool

A Berdan primer cap removing tool for decapping a spent Berdan primed cartridge case, having flash hole means in the base thereof, to enable reloading of the cartridge case, comprising a tubular means for communicating at a first end thereof with the inside of the base of a cartridge to sealingly contact against said base and communicate pressurized fluid thereto from a source of said fluid, said tubular means first end being dimensioned to overlie said flash hole means, said first end of said tubular means being adapted to be sealingly held against said cartridge case base during decapping, the improvement comprising in that said source of pressurized fluid comprises a cylinder body and a piston reciprocably movable therein, means for feeding a working fluid within said cylinder body, said piston having a striking surface extending externally of said cylinder body which when struck acts on said working fluid to impulsively communicate pressurized fluid to the primer cap to be removed, said cylinder body being formed with a bore of predetermined size, said cylinder body having an axially extending cylindrical tubular part adapted to be received in the cartridge case and having a bore in communication with the bore in the cylindrical body, said tubular part having a diameter and bore size smaller than the diameter and bore size of the cylindrical body, said first end of the tubular means comprising the free end of the tubular part extension of the cylindrical body, said cylindrical body having a threaded portion adapted for threaded engagement with a standard shooter's device for sealingly engaging said first end of the tubular means with the cartridge base, said first end of the tubular means having resizing means for resizing the cartridge on removing the axially extending tubular part from the cartridge case after decapping thereof.