SMALL ARMS CARTRIDGE WITH INCREASED PENETRATION Russian patent published in 2023 - IPC F42B12/04 

FIELD: ammunition.

SUBSTANCE: small arms cartridges with increased penetration. The cartridge contains a cartridge case with an igniter primer, a propellant charge, and a bullet with an armour-piercing core. The length of the cartridge is from 55 to 63 mm, the cartridge case is bottle-shaped, its body is made with a taper of 1.0-1.5° and has the following geometric dimensions, mm: length 39.5-42.5; flange diameter 10.7-10.9; the diameter of the body at the slope is 10.1-10.4; The diameter of the barrel is 6.6-6.9, while the internal free volume of the sleeve is at least 1.9 cm³. A bullet with an armour-piercing core has an elongated ogival head part equal to 2.5-3.5 calibres, a cylindrical part equal to 0.8-1.5 calibres, and a tail part made in the form of a truncated cone, while the length of the bullet ranges from 3 .4 to 5.5 calibres, and its mass ranges from 4.5 to 8.0 g.

EFFECT: creation of a low-pulse intermediate cartridge for small arms with improved external ballistic characteristics, and performance in terms of penetration of the elements of personal armour protection of a person while maintaining a comfortable recoil impulse and weapon dimensions.

2 cl, 4 dwg, 1 tbl