SMOOTH-BARREL FOWLING PIECE CARTRIDGE AND PARADOXES Russian patent published in 2009 - IPC F42B7/10 F42B14/06 F42B12/02 

FIELD: weapons and ammunition.

SUBSTANCE: proposed cartridge is designed for shooting from fowling pieces at ranges not over 100 m. The proposed cartridge comprises a solid-material bullet with its outer surface furnished with a groove dividing the bullet into front and tails parts and a thin-wall plastic enclosure enveloping the bullet and made up of two identical lengthwise halves with the outer cylindrical surface inner surface, its cross section matching the bullet outer surface. The bullet front part end features a peripheral flat circular ledge with width b and height b₁=0.5b getting transformed into a tapered bore with the angle of α=120±5° at the apex. Note here that the said enclosure extends from the bullet front part end face plane by b₂=b₁.

EFFECT: longitudinal stability of cartridge and higher accuracy of hits in shooting through minor obstacles.

5 cl, 1 dwg, 1 tbl