| 摘要 |
PCT No. PCT/CA91/00090 Sec. 371 Date Jan. 21, 1992 Sec. 102(e) Date Jan. 21, 1992 PCT Filed Mar. 22, 1991 PCT Pub. No. WO91/14916 PCT Pub. Date Oct. 3, 1991.A cartridge 10 for low-mass, frangible projectiles 60 comprises a cartridge case 12 having a primer 14 at its base and a sabot 30 or piston 30 at its mouth. The piston 30 can be provided with longitudinal orifices 44, diagonal orifices, 44a, grooves 64 or any combination of orifices and grooves. The projectile 60 is inserted into a cylindrical recess 46 in the front portion of the sabot 30. The orifices 44 are in communication with this recess 46 to permit propellant gas to bleed through and accelerate the projectile 60 upon ignition. The case 12 and the sabot 30 can be provided respectively with a crimp 24 and a stepped portion 48 in order to limit travel of the sabot 30 out of the case. |
