The decomposition of a projectile in a target body, particularly a hunting
projectile in wild animals after penetration therein, determines the
energy output of the projectile and thereby the effect of the shot. For
projectiles with double cores, the properties of the ingredients used in
the cores decisively affect the decomposition and particularly the
deformation behaviour of the cores. According to the invention, a partial
decomposition projectile comprising two cores is provided with one solid
core (3) made of a material suited to said projectile and the other core
(4;22) is divided up into two areas (4a,4b;22a;22b), whereby one area
(4a;22a) is made of ball-shaped elements made of a metal material
granulate (5;23) and the second area (4b;22b) is made of a metal or
ceramic powder and the ball-shaped elements or granulates (5;23) are
pressed to become free of shrink holes, in order to improve decomposition
behaviour control.