http://world.guns.ru/ammo/sp-e.htm
With regard to these exotic cartridges, it seems that with any appreciable amount of powder, the cartridge case would become a dangerous pressure vessel once the piston sealed it up. Was the powder charge kept very low, or were the case walls made thicker to compensate?
With regard to these exotic cartridges, it seems that with any appreciable amount of powder, the cartridge case would become a dangerous pressure vessel once the piston sealed it up. Was the powder charge kept very low, or were the case walls made thicker to compensate?