| 摘要 |
A casing has a projectile receiving end portion and a primer receiving end portion. A plurality of projectiles is positioned in a stacked configuration within the casing at the projectile receiving end portion. A propellant receiving space is defined within the casing between an innermost one of the projectiles and the primer receiving end portion of the casing. The innermost one of the projectiles has a gas check body attached thereto at an end face thereof exposed to the propellant receiving space of the casing. A first cannulure is positioned between the gas check body and the primer receiving end portion of the casing for defining a protrusion for limiting displacement of the gas check body toward the primer receiving end portion of the casing. A second cannulure is positioned within the projectile receiving end portion of the casing for forming a protrusion that engages an outermost one of the projectiles. |
