| 摘要 |
The invention enables mortar projectiles to reach long distances with very little ballistic dispersion. It mainly comprises a cylindrical body 1 provided on its outside with longitudinal external ribs 8 whose external calibre is matched to the internal calibre of the mortar tube, in order to ensure a satisfactory guiding of the projectile during launching, while allowing the free flow of air between the projectile and the tube during the descent on loading. <IMAGE>
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