| 摘要 |
<p>A bullet comprised of a jacket (10) of malleable metal having a closed nose portion (12) and a rear end portion defined by a cylindrical wall, the closed nose portion having wall-weakening areas (4) encapsulating a forward core (17) made of a deformable material which promptly deforms, collapses axially, and expands radially to a substantial extent along with the weakened wall areas, when the bullet strikes a target. These weakened wall areas are in the form of longitudinally extending, deep, internal or external, circumferentially spaced grooves with underlying web areas. This core is preferably made mainly of rubber, urethane, silicone, or one of a substantial number of plastics, such as fluocarbons, polycarbonates, polypropylenes, polystyrenes, polyethylenes, PVCTM, silicone rubber, NylonTM, and vynyl acetate, each of which has a hardness within a range of Shore A-20 to Rockwell R-122. A second core (18), made mainly of metal such as tungsten, lead zinc, copper, tin, iron or alloys thereof or hard plastic, is seated, under pressure, behind the nose core and within the rear end portion of the jacket.</p> |
