A multiple cartridge assembly is described which facilitates speed loading of a four barrel less than lethal gun. Four less than lethal cartridges are attached to the multiple cartridge assembly and arranged to correspond with the breech of a four barrel less than lethal gun. Each less than lethal cartridge is constructed with a projectile which when fired has a velocity which will not kill an individual struck by the projectile. The less than lethal cartridge has a rim which is deeper or thicker than a rim on a conventional lethal cartridge. The caliber of the cartridge is also selected so that regular lethal ammunition is not available in this caliber. The preferred caliber of the less than lethal cartridge is 0.490. The less than lethal cartridge contains a polymeric projectile or alternatively, a sealed filled polymeric pouch containing shot therein.