Patent ID: 6202533
Filing Date: 2001-03-20
Classification: F41A,F42B

Abstract:
A subcaliber cartridge and a firearm apparatus for firing a projectile of the subcaliber cartridge, comprising:a subcaliber barrel disposed within a barrel of the firearm, said subcaliber barrel including a first primary booster area at one end and a bore extending to an opposite muzzle end; anda cartridge case adaptor including a second primary booster area, said cartridge case adaptor positionable with respect to said subcaliber barrel by a bolt of the firearm to form a volume between said first primary booster area and said second primary booster area, said cartridge case adaptor including a subcaliber cartridge chamber coaxial with said subcaliber barrel bore, said chamber having an enlarged neck portion,wherein said volume communicates with said enlarged neck portion when said subcaliber cartridge is disposed within said chamber thereby allowing passage of pressurized gas from said chamber to said volume when said subcaliber cartridge is fired and the projectile of said subcaliber cartridge is positioned within said enlarged neck portion.