ARMOUR-PIERCING BULLET Russian patent published in 2012 - IPC F42B12/06 F42B30/00 

FIELD: weapons and ammunition.

SUBSTANCE: armour-piercing bullet comprises a bimetal shell, a hard-alloy core a cavity in front of the core in the head part of the shell. Centre of mass of a bullet is located at the distance of (1.44-1.51)d relative to its end. The thickness of the shell top makes (0.25-0.35)d, and of its master part - (0.10-0.13)d. The core is made with length of (3.05-3.15)d and has radius of head part equal to (6.3-6.4)d. The distance from the top of the core to the top of the bullet makes (0.74-0.88)d, where d is the bullet calibre.

EFFECT: high close pattern of shots and improved piercing effect of the bullet.

2 cl, 2 dwg