Currently, 9 mm19 mm caliber cartridges in the form of full-jacketed round-head bullets are used for small arms, especially for arms used by police. For safety reasons, efforts are being made to replace these bullets with a type of bullet that is prevented from passing straight through the target medium. Known deformable bullets from the prior art vary considerably in terms of the energy that they release in the target medium of density (1), especially in the human body. The invention therefore provides that the bullet (1) consists of a jacketless bullet body (2), that a cavity (5) extends centrally in relation to the longitudinal axis (15) of the bullet (1) in the tapered front part (6) of the bullet body (2), said cavity consisting of a cylindrical part (16) and at least one conical part (19) adjoining said cylindrical part; that a pusher (3) which forces the projectile open forms the bullet tip and that said pusher consists of a head (7) which seals the opening (4) of the cavity (5) and a shaft (8) which extends into the cavity (5).