Abstract: This disclosure relates to cartridges, including shotshell cartridges, for launching multiplex projectile loads that contain different sizes or types of projectiles, and methods of loading the cartridges. In one aspect, for example, the present cartridges can contain an obturating component adjacent the cartridge propellant, a first payload adjacent the obturating component, a separating component adjacent the first payload, and a second payload adjacent the separating component. Shotshells of this configuration in which the first (aft) payload comprises birdshot and the second (forward) payload comprises buckshot are particularly useful.

Abstract: This disclosure relates generally to cartridges for use in projectile-launching devices, such as ammunition cartridges, flare cartridges, and the like, including components of the cartridges, and methods for their manufacture. For example, the cartridges of this disclosure can be ammunition cartridges such as shotshell cartridges, which include an obturating medium which functions to seal the compressed but expanding hot gases and can be used without a pre -formed gas seal.

Abstract: This disclosure relates generally to cartridges for use in projectile-launching devices, such as ammunition cartridges, flare cartridges, and the like, including components of the cartridges, and methods for their manufacture. For example, the cartridges of this disclosure can be ammunition cartridges such as shotshell cartridges, which include an obturating medium which functions to seal the compressed but expanding hot gases and can be used without a pre-formed gas seal.