SPHERICAL POWDER CHARGE FOR 7,62×51M HUNTING CARTRIDGE Russian patent published in 2013 - IPC C06B21/00 

FIELD: weapons and ammunition.

SUBSTANCE: proposed charge consists of spherical powder with particle size of 0.4-0.8 mm. Said charge is arranged inside encapsulated case with bullet. Said charge is made of spherical powder elements consisting of nitrocellulose containing nitrogen oxide in amount of 213.0…214.5 ml NO/g, 10.0…13.0 wt % of nitroglycerine, 0.1…0.3 wt % mollite II, 0.3…0.7 wt % of diphenylamine wit bulk density of at least 0.960 kg/dm³, 4.0-5.0 wt % of mollite I and 2.0-4.0 wt % of dinitrotoluene retarded from the surface, 0.1-0.3 wt % of graphite graphitised from the surface with 0.2…0.6 wt % of moisture and 0.1…0.9 wt % of ethyl acetate. Weight fraction of undersize 0.8 mm powder and oversize 0.4 mm powder makes at least 95 %. Weight fraction of oversize 0.8 mm powder and undersize 0.4 mm powder makes at least 5%.

EFFECT: stable ballistic characteristics.

1 dwg, 1 tbl, 5 ex