BULLET SHELL FOR SHOOTING FROM SMOOTHBORE BARREL Russian patent published in 2021 - IPC F42B5/02 F42B7/02 F42B7/10 

FIELD: weapons.

SUBSTANCE: invention relates to ammunition, namely to bullet shells for smoothbore barrels. A bullet shell for shooting from smoothbore weapons is comprised of a case, an igniting primer, a propellant charge. A bullet is placed in the case, with a cylindrical part of the bullet body, fixed by an annular fastener, comprising a piston consisting of a round part and a square part, wherein the square part of the piston is configured to enter the square hole of the cylindrical part of the bullet body to prevent rotation of the piston configured to be fixed in the bullet body with a ball lock before the bullet exits the bore. Slanted holes are located in the circular part of the piston from the end side along the outer perimeter at an angle to the bullet axis to rotate the bullet, wherein plugs are installed to prevent liquid from entering the cavity of the gunpowder sleeve. The liquid cavity of the bullet is formed by the side wall of the bullet body, the front part of the piston and a protective film fixed on the bullet body and covering the slanted holes of the bullet body. The liquid cavity of the piston is formed by the end part of the bullet body, the piston, a protective film fixed on the bullet body and the round part of the piston. The liquid cavities of the bullet and piston contain liquid, the liquid is retained in the liquid cavity of the piston and the liquid cavity of the bullet body by the protective film of the piston fixed to the bullet body, the piston and the plugs on the end side of the circular part of the piston. Slanted holes are made in the side wall of the cylindrical part of the bullet body allowing liquid to pass from the liquid cavity of the bullet into the gap between the bullet body and the barrel of the weapon. Grooves are made on the outer side of the cylindrical part of the bullet body, allowing liquid to pass through the grooves from the liquid cavity of the bullet.

EFFECT: increased speed of the bullet fired from a smoothbore weapon and reduced heating of the barrel upon firing.

1 cl, 6 dwg