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Firearm cartridge with pre-pressurizing charge

  • US 5,421,264 A
  • Filed: 12/02/1993
  • Issued: 06/06/1995
  • Est. Priority Date: 09/15/1992
  • Status: Expired due to Fees
First Claim
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1. A firearm cartridge comprising:

  • a casing;

    a projectile connected to the casing;

    a pre-pressurizing charge located inside the casing behind a rear end of the projectile;

    a main propellant charge located inside the casing behind the rear end of the projectile; and

    a barrier located between the pre-pressurizing charge and the main propellant charge, the barrier being adapted to substantially prevent the pre-pressurizing charge from igniting the main propellant charge, but allow pressure from burning of the pre-pressurizing charge to the exerted on the main propellant charge wherein the pre-pressurizing charge is located adjacent the rear end of the projectile.

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