CARTRIDGE FOR SMOOTHBORE GUN Russian patent published in 2002 - IPC

FIELD: ammunition, mainly for sporting gun. SUBSTANCE: the barrel-type weapon cartridge has a cartridge case. A primer cap is built in its base. The shell chamber accommodates the shell. A propellant charge and wads are positioned between the cartridge case base and the chamber. A cylinder-shaped sleeve-container is built inside the wad with a stop of the front end face against the wad base and a stop of the rear end face against the cartridge case base. A cylinder-shaped clearance is formed. Perforation is provided in the cylinder-shaped and rear walls of the sleeve container. The charge is placed inside the sleevecontainer. In the rear end wall of the latter provision is made for a hole for charge ignition. Thus, the sleeve-container is installed for axial motion behind the shell under the action of powder gases. The wad may be made in the form of a wad-container. At burning of the charge the powder gases, being throttled through the ducts, are gradually fed to the clearance. The gases throttled through the ducts in the rear end wall of the sleeve-container, facilitate formation and expansion of the clearance between the cartridge case end face and base. The skew ducts oriented backwards provide for a reactive effect. Inflow of powder gases from the sleeve-container through the perforation determines the dynamics of increase of the rear-shell space. The powder burns out completely. EFFECT: improved technical-and-economic indices. 4 cl, 2 dwg