Abstract: There is disclosed a fin-stabilized unarmed missile for impact diagram target shooting. The missile has an essentially cylindrical body to the rearwardly tapered rear end of which there is affixed a winged tail unit. The missile body has a transverse front end portion extending at a right angle with respect to the axis of the missile body. A forwardly extending pin coaxial of the missile body is secured at its rear end in a central passage in the front end portion of the missile body. The forward end of the pin has an annular flange thereon which creates pressure equalization about the missile as it travels through the air.

Abstract: An improved construction and support for a twist-reducing ring carried on a stabilized projectile is described. The ring, which is rotatably supported in an annular groove in a portion of the projectile jacket, is formed from a plurality of circumferentially abutting, axially aligned powdered metal segments. Such segments, which are released upon separation of the projectile from the surrounding cartridge case, are initially retained in place either by the front wall of the cartridge or by a separate, easily destructible auxiliary ring. The ring segments are either directly rotatably engaged with the bottom wall of the annular groove, or are housed within a separate U-shaped container which, in turn is slidably mounted in the groove.