초록 ▼

Ammunition having increased projectile velocity and energy without increasing the chamber pressure within a firearm such as a handgun, rifle, anti-aircraft gun, canon, etc. This is accomplished by simultaneously incorporating at least two of three interdependent modifications. The concept consists o

Ammunition having increased projectile velocity and energy without increasing the chamber pressure within a firearm such as a handgun, rifle, anti-aircraft gun, canon, etc. This is accomplished by simultaneously incorporating at least two of three interdependent modifications. The concept consists of using a specific gunpowder pseudo overcharge by adding more and/or faster burning explosive, in conjunction with a projectile having an internally jacketed axial bore. The jacketed bore must possess sufficient area to prevent the pseudo overcharge pressure from exceeding the predetermined pressure specification. The net result is a pressure and confident modification of the gunpowder burning parameters which produce much higher average propulsion pressure for any given peak pressure.

대표청구항 ▼

In firearm ammunition, the combination of: a powder charge; a cartridge case means for holding said powder charge; a primer for igniting said powder charge; a projectile disposed in one end of said cartridge case means and having axial vent means; and partition means disposed to block said axial ven

In firearm ammunition, the combination of: a powder charge; a cartridge case means for holding said powder charge; a primer for igniting said powder charge; a projectile disposed in one end of said cartridge case means and having axial vent means; and partition means disposed to block said axial vent means and being rupturable upon ignition of said powder charge; the amount of said powder charge being of such predetermined value as would produce a destructive chamber over-pressure for a particular firearm; and the area of said vent means being of such predetermined size as to permit escape of a portion of the combustion pressure through said vent means and ahead of the projectile while it is still in the barrel of the particular firearm, to prevent an over-charge explosion force from reaching a value that would normally be destructive if used with an unvented projectile in the particular firearm.