The 5 in 1 is a general blank case that is designed to feed in lever action rifles. It is the same length as a loaded cartridge in 45 Colt, 44-40, 38-40 and 44 MAG and will chamber in all (must neck for 38-40). Will also chamber in 44 SPL if trimmed. It accepts large rifle primers and contains .140 diameter flash hole. Not intended to be re-used after initial loading!