Cartridge for light-weighted projectiles

Abstract

A cartridge that can fire a light-weighted projectile, producing a pressure curve of the propellant gases similar to the pressure curve generated by the shot of a heavy weighted lead-core projectile. The cartridge propels the light-weighted projectile together with a capsule, which contains an inert load of high density metal powder. The capsule is divided in multiple parts, which disassemble when it leaves the firearm muzzle, spreading the metal powder in the air. The metal powder increases the mass which is accelerated by the propellant gases, keeping the pressure curve high enough to cycle a self-loading firearm mechanism. The metal powder consists of very thin particles which spreads and decelerates rapidly in the air, causing a controllable level of danger to personnel.

1 . A cartridge capable of cycling a standard self-loading firearm's mechanism, said cartridge comprising:
 a) a cartridge case with a primer and a charge of propellant;   b) a projectile, which has not enough mass itself to raise the pressure of the propellant gases to a level that the self-loading firearm cycles;   c) a collapsing capsule which is divided in two or more parts that are assembled together with the projectile inside the cartridge case, is hermetic when assembled, carries an inert load of metal powder inside, is kept assembled during the internal ballistics and disassembles immediately after it leaves the firearm muzzle, detaching from the projectile;   d) a load of metal powder which is packed inside the collapsing capsule, has enough mass to raise the propellant gases pressure to a level that the self-loading firearm cycles appropriately and spreads in the air immediately after the collapsing capsule disassembles.   
     
     
         2 . A blank cartridge capable of cycling a standard self-loading firearm's mechanism, said cartridge comprising:
 a) a cartridge case with a primer and a charge of propellant;   b) a collapsing capsule which is divided in two or more parts that are assembled together with the projectile inside the cartridge case, is hermetic when assembled, carries an inert load of metal powder inside, is kept assembled during the internal ballistics and disassembles immediately after it leaves the firearm muzzle, detaching from the projectile;   c) a load of metal powder which is packed inside the collapsing capsule, has enough mass to raise the propellant gases pressure to a level that the self-loading firearm cycles appropriately and spreads in the air immediately after the collapsing capsule disassembles.   
     
     
         3 . The cartridge of claim number  1 , wherein said metal is tungsten. 
     
     
         4 . The cartridge of claim number  1 , wherein said projectile is made of wax or a composition of wax and ink and is placed in the base of the collapsing capsule. 
     
     
         5 . The cartridge of claim number  1 , wherein said projectile is a frangible capsule filled with paint. 
     
     
         6 . The cartridge of claim number  1 , wherein said projectile is a solid body made of elastomer. 
     
     
         7 . The cartridge of claim number  2 , wherein said metal is tungsten.