| 摘要 |
A round of gun ammunition (12) including a projectile (40) adapted to be propelled from the gun at a subsonic velocity. The round includes a case (14) containing a quantity of gun powder (38) therein, but not filling the case. A projectile (40) projects into the body portion (20) of a case (14) to a location proximate the gun powder. A disc (50) having a circumference substantially matching the inner circumference of the body portion (20) of the case at the level (52) of the gun powder within the case is interposed between the gun powder and the proximal end (56) of the projectile (40) within the case to provide a barrier against movement of gun powder toward the open end (18) of the case (14). In one embodiment, a further disc (80) is interposed between the disc (50) and the proximal end (56) of the projectile (40) to filter out gun powder particles which may escape past the barrier disc (50). A method for the manufacture of the round of gun ammunition is disclosed. |
