| 摘要 |
<p>Lead bullet with plane base and base spoke, provided with an oil duct which avoids leading or residues in the bore, which serves as separation mean between the two rifling zones of the bourrelet, composed of two separate zones, achieving a centering and guidance of the bullet with a decrease in the friction, having a crimping channel and a separation zone between the bourrelet and the driving-band which corrects the oscillations in the chamber, forcing the coincidence of the bullet centerline with the bore centerline, eliminating the fracture and dislocation of the shot bullets, having a spoke which allows the adequate interrelation with the junction cone of the bore and a cone frustum favouring the deformation of the bullet.</p> |
