A non-lethal spread projectile has a center pin (1) as a guide on which a weight plunger (5) is caused by impact stop of gun-fired flight momentum to slide from an aft end (3) to a front end (2) of a spread projectile (4) for spreading fill material (9) in a fill bag (10) ahead of the weight plunger over a broad surface of an impacted target (25) for preventing damaging penetration of the spread projectile into the impacted target and to mark the impacted object predeterminedly.