a projectile is provided for delivering a payload from a smoothbore launcher to a target . the projectile includes an aerodynamic stabilizer , an extender along which the stabilizer can longitudinally translate , and a chamber connected to the extender to contain the payload . the chamber can include a plastic bag for containing a liquid that represents the payload , and a plurality of holes that radially extend through its wall . the stabilizer enhances post - launch directional stability of the projectile by longitudinally translating rearward along the extender to shift center of pressure of the projectile aft of center of gravity of the projectile . the bag ruptures upon contact with the target , thereby disbursing the liquid through the holes . the bag can include malodorant or paint . the projectile can be contained within a gunpowder - loaded shotgun shell for launch .