FIELD: weapons and ammunition.
SUBSTANCE: case comprises cylindrical and bottom parts, localisers of crushing case into splinters. Localisers are composed by annular grooves at case outer surface. The case is composed by two shells, a solid inner shell and a composite outer shell. The latter consists of several isolated parts. Rings are fitted on inner shell to allow their side surfaces heat in contact there between. Annular grooves between outer shell parts are made by fitting extreme rings of outer shell parts so that they are spaced apart. Outer shell parts are composed of axial coupled spiral coils made of metal bar. Coils of every other spiral are shifted relative to each other by, preferably, half the ring thickness relative to the coils of previous spiral.
EFFECT: higher hitting efficiency.
9 cl, 3 dwg
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