Abstract: A cartridge holder for carrying firearm cartridges includes an elongated cylindrical tube having opposite open ends. A removable cap is received in each of the open ends. A plurality of firearm cartridges are stacked in front end to rear end coaxial relation within the tube. Indicia on an outer surface of the tube designates a forwardly facing direction of the cartridges. One of the removable caps may be selectively removed to load a forwardly or a rearwardly opening magazine of a firearm. An enlarged diameter hollow quiver is disclosed for carrying a plurality of the tubes in parallel adjacent relation. A belt engaging hook on the quiver allows a large quantity of firearm ammunition to be conveniently transported for rapid loading.