PYROXYLIN PELLET POWDER FOR 5.6 MM SPORT HUNTING CARTRIDGE OF CIRCULAR IGNITION Russian patent published in 2016 - IPC C06B25/20 C06B21/00 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to spherical gunpowder for small arms. Pyroxylin pellet powder for 5.6 mm sport hunting cartridge of circular ignition contains as starting material pyroxylin with nitrogen oxide content 213.0-214.0 ml NO/g and up to 30 wt% recyclable non-process wastes from previous operations, diphenylamine, technical carbon, ethyl acetate and moisture. Powder elements with size of 0.2-0.4 mm and bulk density of 0.62-0.72 kg/dm³ are phlegmatised from surface with dibutyl phthalate at a depth of 10-20 mcm and graphitised from surface with graphite.

EFFECT: invention provides production of pellet powder for 5,6 mm sport hunting cartridge of circular ignition with bullet speed of 485-500 m/s without increase of pressure of powder gases in barrel and flame during firing.

1 cl, 1 tbl, 5 ex