Abstract: The invention relates to systems, methods and devices for controlling the dispersion of shot or other projectiles fired from a weapon such as a shotgun. Embodiments according to the invention employ an inner cylindrical chamber that is divided at a median transverse plane into forward and rear sections. The rear section of the chamber tapers toward the median transverse plane and includes a number of radial vents that open into an outer chamber that provides one or more gas bypass channels into the forward section of the tubular chamber. Alternatively, channels function as unitary vents and outer chamber to provide for a gas bypass. The forward section tapers toward a forward muzzle opening. When a multiple projectile load/wad is fired from the weapon, expanding gas is sealed behind the load until it has advanced past the radial vents at which point, gas is allowed to expand into the outer chamber resulting in a momentary pressure drop and reduced propulsion force behind the wad/load.

Abstract: A shotgun gas exchanger comprising a gas exchanger tube for connectively engaging with a shotgun barrel and a choke disposed in the gas exchanger having longitudinal axial channels on the exterior surface thereof, such that gas from the shotgun barrel flows through the longitudinal axial channels and gathers in front of the muzzle end of the choke to retard the release of pellets from a wadding cup exiting the muzzle.

Abstract: The invention relates to systems, methods and devices for controlling the dispersion of shot or other projectiles fired from a weapon such as a shotgun. Embodiments according to the invention employ an inner cylindrical chamber that is divided at a median transverse plane into forward and rear sections. The rear section of the chamber tapers toward the median transverse plane and includes a number of radial vents that open into an outer chamber that provides one or more gas bypass channels into the forward section of the tubular chamber. The forward section tapers toward a forward muzzle opening. When a multiple projectile load/wad is fired from the weapon, expanding gas is sealed behind the load until it has advanced past the radial vents at which point, gas is allowed to expand into the outer chamber resulting in a momentary pressure drop and reduced propulsion force behind the wad/load.

Abstract: A cartridge has a shell casing with a primer end and a projectile end. A projectile mounted in the projectile end is made of four segments held together by first and second retainer rings. In one form each segment contains shot. One form of the projectile has an air brake which is deployed as the projectile leaves the muzzle. The air brake is partially deployed or fully deployed, depending of the shredding of third and fourth retainer rings which hold the air brake. When the shredder is inserted in a barrel in a first position, the last horizontal retainer ring is shredded and the air brake is partially deployed. When the shredder blades are further positioned in the barrel, both retainer rings which hold the air brake are shredded and the air brake is fully deployed. Additional positions of the shredder ring first shred the second ring, releasing the segments, and then shred the first retainer ring, releasing the shot and other contents from the segments.

Abstract: The invention is a multi-shot launcher adapted to launch ring airfoil projectiles. Each ring airfoil projectile is coupled to a sabot, the ring airfoil projectile and sabot mounted to a housing in a cartridge form. The cartridge has a length which is less than its diameter. The launcher includes a receiver defining a cartridge receiving area and a tubular passage through which the ring airfoil is launched from a fired cartridge. The launcher includes a trigger mechanism for firing a cartridge. The launcher includes an ejector for ejecting the housing of a spent cartridge from the receiving area and a loader for loading a new cartridge into the receiving area. The cartridge may be loaded from a magazine connected to the receiver.

Abstract: An apparatus and process for providing exceptionally high velocity projectiles and safer, more accurate munitions. Inefficiencies in explosive oxidation rates and initial resistance to velocity acquisition are overcome.

Abstract: A muzzle break for a gun comprising a baffle, a series of slots in the housing of the muzzle break in which the slots exhaust gas of a pressure wave deflected by the baffle during firing of the gun. A membrane seals the slots for underwater use and is separable by the deflected exhaust gas. Another membrane seals a sabot separation chamber of the muzzle break adjacent to the baffle and in a projectile path from the baffle. The membrane for the separation chamber is detachable by a projectile fired from the gun.

Abstract: Barrel assembly (10) includes an array of individual barrels (11) with each barrel (11) including a sabot stripping structure (23) and a sabot receiver (28) arranged to collect and prevent sabots (14) from exiting muzzle (20) of barrel (11). Each barrel (11) incoporates a multiplicity of sabotted projectiles (12) stacked axially within barrel (11) and a multiplicity of interposed corresponding propellent charges (16). Sabotted projectiles (12) each comprise projectile (13) and an associated sabot (14) detachably engaged with projectile (13). Detonation of a leading propellant charge (16) urges following sabotted projectiles (12) into sealing engagement with respective barrels (11).

Abstract: A firearm muzzle brake for utilization for a projectile surrounded by a sabot includes an outer housing, a baffle received within the outer housing and having a bore extending therethrough, and an inner core received within the bore of the baffle and having a bore extending therethrough. The bore of the core has a first section having a diameter that is adapted to allow a sabot to partially tear away from an associated projectile as the projectile and sabot travel through the first section of the bore of the core, and a second section having a second diameter that is adapted to hold the sabot in close contact with the projectile as the projectile travels through the second section of the bore of the core.

Abstract: A propulsion device including a fuel chamber and barrel constructed with off-the-shelf parts for propelling biodegradable objects. The fuel chamber includes a fuel nozzle actuator for receiving fuel from a pressurized gaseous container. The fuel chamber also includes an ignitor for igniting the fuel in the fuel chamber. The barrel may be interchanged with one including noise reducing holes.