"STOPPER K" BULLET AND CARTRIDGE FOR SMOOTH-BORE WEAPON Russian patent published in 2012 - IPC F42B30/02 F42B14/02 F42B7/10 

FIELD: weapons and ammunition.

SUBSTANCE: bullet is arranged as monolithic from a plastic lead alloy and comprises three parts: a head part of the bullet in the form of a hemispherical fairing, the middle aligning part of the bullet, arranged as conical with the maximum diameter of the cone base, making 0.75-0.85 of the barrel channel diameter, and equipped along the peripheral surface with support-aligning ribs, having alternating length, equal to the full and half length of the middle part of the bullet, with an angle of ribs setting making 8-14° to the longitudinal axis of the bullet, and a tail obturator-stabilising part of the bullet equipped with front and tail belts of obturation. The tail and middle parts of the bullet on their axis at the side of the tail cut of the bullet contain a dead cavity formed by axial coupling of two truncated cones and ending with a hemisphere. The cavity depth makes 75% of the total bullet length. A cartridge for a smooth-bore weapon comprises a case, an igniting facility, a powder charge and the above bullet. The bullet is installed into the case with its tail belt of obturation directly at the powder charge.

EFFECT: higher range, accuracy and closer grouping of firing.

2 cl, 1 dwg