Cartridge ammunition is provided comprising a subcaliber shall, a sabot attached to the shell, and a propellant case including a cartridge cover connected with a catch to the sabot. The cartridge cover is bulge-like bent and comprises spring parts protruding toward the axis and is formed conjugated to the positive adapted surfaces of the sabot concentrically surrounding the shell. Preferably slots are disposed at the spring parts protruding toward the axis of the bulge-like bent cartridge cover and the slots are preferably distributed uniformly over the circumference of the center end of the cartridge cover.