Patent ID: 7025001

Claim:
A crash-bang cartridge assembly, comprising a tubular cartridge; and a projectile within said tubular cartridge, said projectile comprising: a tubular projectile casing; a delay block located at one end of the tubular projectile casing; a delay fuse column within said delay block, said delay fuse column being at least partially filled with a delay fuse composition; a flash charge within said projectile casing, said flash charge being ignited by said delay fuse composition; and a weighty and frangible ballast located on a leading edge of said projectile, at an end of the tubular projectile casing opposite from the end having the delay block, wherein a weight of said ballast is sufficient to provide stability and accuracy in flight, and wherein the weighty and frangible ballast comprises a mixture of zinc powder and graphite powder; wherein the mixture of zinc powder and graphite powder is sufficiently frangible that, after detonation of said flash charge, the mixture comprises low mass, low energy components.