Devices and methods for shotshell cartridges, particularly shotshell cartridges with biodegradable components. One or more of the casing, shot wad, spacer, and powder wad may be formed of biodegradable materials. A biodegradable shot wad is manufactured of cellulosic fibers and wax to provide obturation and gas seal properties at high pressures with high reliability.

Devices and methods for shotshell cartridges, particularly shotshell cartridges with biodegradable components. One or more of the casing, shot wad, spacer, and powder wad may be formed of biodegradable materials. A biodegradable shot wad is manufactured of cellulosic fibers and wax to provide obturation and gas seal properties at high pressures with high reliability.

A projectile delivers a pellet payload to an increased range with increased accuracy. A two piece aerodynamically stable pusher consists of a body and tailpiece. This pusher fits into a standard 40 mm cartridge case by means of three sabots. To seal against combustion gases, a three piece split rotating band is employed.

Systems, methods and apparatus are provided through which in some implementations an ammunition cartridge includes a cartridge casing having a longitudinal center axis, a powder pocket positioned adjacent to the cartridge casing, a piston bore positioned adjacent to the powder pocket, a piston in the piston bore, and a payload bay positioned adjacent to the payload bay, wherein the piston is not coupled to the cartridge, wherein the piston is in contact with the payload bay wherein a diameter of the powder pocket is less than an inside diameter of the cartridge casing to provide a reduced velocity to the payload.

Systems, methods and apparatus are provided through which in some implementations an ammunition cartridge includes a cartridge casing having a longitudinal center axis, a powder pocket positioned adjacent to the cartridge casing, a piston bore positioned adjacent to the powder pocket, a piston in the piston bore, and a payload bay positioned adjacent to the payload bay, wherein the piston is not coupled to the cartridge, wherein the piston is in contact with the payload bay wherein a diameter of the powder pocket is less than an inside diameter of the cartridge casing to provide a reduced velocity to the payload.

A wad or shot cup having a forward cylinder portion receiving a payload and a rear cylinder portion receiving a charge of propellant. One or more latent deceleration features can be formed in a surface of the sidewall extending along the rear cylinder portion. The latent deceleration features can be spaced apart from a rearward end of the shot cup and can be deployed to form deceleration petals after the shot cup is fired from a firearm. A series of longitudinal slits can be formed in the forward cylinder portion so that a portion of the sidewall expands radially adjacent the longitudinal slits after the shot cup is fired from a firearm for urging at least a portion of the payload to exit the forward cylinder portion.

A wad or shot cup having a forward cylinder portion receiving a payload and a rear cylinder portion receiving a charge of propellant. One or more latent deceleration features can be formed in a surface of the sidewall extending along the rear cylinder portion. The latent deceleration features can be spaced apart from a rearward end of the shot cup and can be deployed to form deceleration petals after the shot cup is fired from a firearm. A series of longitudinal slits can be formed in the forward cylinder portion so that a portion of the sidewall expands radially adjacent the longitudinal slits after the shot cup is fired from a firearm for urging at least a portion of the payload to exit the forward cylinder portion.

Disclosed herein is a cleaning ammunition for facilitating cleaning of a projectile launching system, in accordance with some embodiments. Accordingly, the cleaning ammunition may include a casing and a cleaning projectile. Further, the casing traversable through a barrel of the projectile launching system. Further, the casing may include a proximal end and a distal end. Further, the casing may include a propellant disposed within an interior space of the casing at the proximal end. Further, the casing may include a primer disposed alongside the propellant. Further, the primer is configured to ignite the propellant based on a striking force receivable from a launching mechanism of the projectile launching system. Further, the cleaning projectile disposed within the interior space adjacent to the propellant. Further, the cleaning projectile is disposed at the distal end of the casing. Further, the cleaning projectile may be configured for performing a cleaning action on the barrel.

A shotgun cartridge having a weighted wad for controlling the separation point between the wad and the shot load. The wad having a tail portion and a nose portion with the nose portion shifting the center of gravity of the wad axially forward away from the center of pressure compared to where the center of gravity would be if the nose portion was not weighted thereby controlling the shot load separation and enhancing the shot pattern.

A shotgun cartridge having a weighted wad for controlling the separation point between the wad and the shot load. The wad having a tail portion and a nose portion with the nose portion shifting the center of gravity of the wad axially forward away from the center of pressure compared to where the center of gravity would be if the nose portion was not weighted thereby controlling the shot load separation and enhancing the shot pattern.