FIELD: weapons and ammunition.
SUBSTANCE: case-free cartridge includes powder charge with capsule, concentric slot, bullet and bosses. Bullet is equipped with inner powder bed. Piston in which some portion of powder charge is arranged is located in the bullet cavity. Rectangular guide protrusions serving as support surface for turns of trapezoidal thread are made on the piston surface. Outlet of the stop from bullet is performed with ogival taper surface on which bosses having guide side surfaces are installed.
EFFECT: increasing initial cast speed of bullet, hitting range and sight distance.
3 cl, 8 dwg
