Projectile and Shaped Charge jet (SC) penetration and perforation of hard metallic targets is described with a common model that satisfies fundamental requirements, namely mass continuity, energy conservation and momentum conservation. Target material is deformed according to established quasi-static elastic-plastic theory until the Projectile/SC is about one hole diameter away from the rear target surface. At this point the remaining target material in front of the projectile is crushed to fragments that are ejected within a conical surface around the trajectory of the projectile/SC. The model yields the mass, velocity and direction of motion for every fragment. These quantities are needed to determine eventual kill of vital components that are hit by the fragments. The model is intended for assessment of effects and vulnerability of complex targets such as tanks, fighter aircraft and naval ships. Presently the model is restricted to cases when projectiles/SC:s hit and leave targets along the normal directions of the target surfaces.