POWDER CHARGE FOR SPORTING AND HUNTING 30 CARBINE CARTRIDGES (7,62×33) Russian patent published in 2012 - IPC F42B5/02 F42B5/16 C06B25/00 

FIELD: powder charge for firearm cartridges.

SUBSTANCE: invention can be used for sporting and hunting 30 Carbine cartridges (7,62x33 mm). The powder charge consists of spherical powder of the size of 0,2...0,4 mm. The charge is positioned in a cartridge with an encapsulated bullet. The charge is made of powder elements consisting of nitrocellulose and of nitroglycerine (15...38% of total mass), with a packed density of 0,850...0,980 kg/dm³; of particles moderated from centralite I or centralite II (3,0...9,0% of total mass), graphite (0,2...0,6% of total mass), containing ethyl acetate (0,6...0,8% of total mass) and moisture (0,2...0,8% of total mass), with the following mass ratio of the fractions, %:

0,2...0,4 mm - at least 80 less than 0,2mm and more than 0,4 mm - up to 20.

EFFECT: stable ballistic performance of the powder charge.

1 dwg