Frangible nonlethal projectile

Claim 1

A two-piece cylindrical projectile for firing from a firearm by a propellant-charged cartridge, such projectile comprising: (a) an aerodynamically shaped thin-walled, frangible cap portion having: (i) a closed nose end carrying a free-flowing filling; (ii) an open base end; and (iii) a surrounding wall that is sufficiently strong to sustain loading and firing, but sufficiently frangible to burst on impact without causing lethal injury, the wall of the cap portion being provided with multiple longitudinal scoring lines which close radially at the nose end and terminate centrallly on said nose end with a region wherein the cap wall is relatively reduced in thickness with respect to the wall thickness between the longitudinal scoring lines; and (b) a plug portion of cylindrical proportions, sealingly installed and protruding into the base end of said cap portion, said plug portion being being provided with a cylindrical wall to contain the expansive effect of propellant gases on firing, and being provided with an interior cavity within such cylindrical wall, the cavity being of a dimension that causes the center of gravity of the projectile to be displaced forwardly of the geometric, longitudinal mid-point of the projectile.