"QUEEN" BULLET AND CARTRIDGE FOR SMOOTH-BORE WEAPON Russian patent published in 2012 - IPC F42B30/02 

FIELD: weapons and ammunition.

SUBSTANCE: bullet comprises a head and a tail parts. Head and tail parts of the bullet are joined by means of a non-detachable joint into a single solid of revolution. The head part is formed by serial coupling of a blunted head fairing in the form of an ogive and a head belt of obturation, having a shape of a truncated cone. The tail part is formed by a hollow cone skirt of a bullet stabiliser, along the peripheral surface of which there are ribs arranged, installed at the angle of 8-12° to the longitudinal axis of the bullet. The alignment system of the bullet is formed by cylindrical surfaces of the tail and head belts of obturation and peripheral cylindrical surfaces of the stabiliser ribs. The obturator system of the bullet is arranged as push-pull type. The stabilising system of the bullet is arranged by a combination of a lighter hollow cone of the skirt, inclined ribs and a tail support-obturator belt. The full length of the bullet makes 1.6-1.9 of the barrel channel diameter. The external diameter of the ribs and length of the ribbed section of the skirt make 1.00-1.003 of the barrel channel diameter. A cartridge comprises a case, an igniting facility, a powder charge and the above bullet.

EFFECT: closer grouping of shots and accuracy of cartridge firing.

2 cl, 2 dwg