Abstract: A crimped-case cartridge comprising a bullet and a casing wherein the casing has alternating crimped and uncrimped sections at its terminal end. The crimped sections form increased contact sections with the bullet, with the uncrimped sections maintaining proper head space for the cartridge. The amount of crimped section versus the amount of uncrimped section is variable to meet a variety of desired ballistic characteristics. Likewise, the amount of taper, angle of crimp, depth of crimp, and pressure applied in the crimped section is also variable. The crimped-case cartridge is employable with bullets having cannelure depressions of any geometry or no cannelure at all. Additionally, a bullet having a cannelure geometry mated to the crimped section geometry is disclosed. Likewise, a plurality of taper-crimp dies forming the crimped-die cartridge is disclosed.