초록 ▼

A bullet includes at least a mid core and a rear core in tandem alignment. The hardness of the mid core is greater than the hardness of the rear core. A jacket envelops both the mid core and the rear core. The jacket has a generally cylindrical sidewall, which is in contact with the mid core, and a

A bullet includes at least a mid core and a rear core in tandem alignment. The hardness of the mid core is greater than the hardness of the rear core. A jacket envelops both the mid core and the rear core. The jacket has a generally cylindrical sidewall, which is in contact with the mid core, and a boat-tail, which is in contact with the rear core. The rear core is substantially contained within the boat-tail. The mid core and the rear core may be substantially lead-free. In one embodiment, the bullet includes a front core in tandem alignment with the rear core and in contact with a nose portion of the jacket. In another embodiment, the mid core extends from the nose portion of the bullet to the boat-tail.

대표청구항 ▼

What is claimed is: 1. A bullet comprising: a front core; a one-piece mid core that includes a substantially monolithic, non-tubular construction, the front core in tandem alignment with the mid core; a rear core in tandem alignment with the mid core, the hardness of the mid core is greater than th

What is claimed is: 1. A bullet comprising: a front core; a one-piece mid core that includes a substantially monolithic, non-tubular construction, the front core in tandem alignment with the mid core; a rear core in tandem alignment with the mid core, the hardness of the mid core is greater than the hardness of the rear core; a jacket enveloping the front core, the mid core and the rear core, the jacket having a nose portion, the front core being positioned adjacent to the nose portion; an angularly indented rear portion forming a boat-tail; and a generally cylindrical sidewall disposed between the nose portion and the angularly indented rear portion, wherein the generally cylindrical sidewall is in contact with the mid core and the boat-tail is in contact with the rear core, the rear core being substantially contained within the boat-tail. 2. The bullet of claim 1, wherein the mid core and the rear core are substantially lead-free. 3. The bullet of claim 2, wherein the mid core has a weight of about 38 grains and is formed from: a high-density constituent material selected from the group of tungsten, tungsten carbide, carballoy, and ferro-tungsten; a second, lower-density constituent consisting of either a metallic matrix material or a plastic matrix material; and wherein the rear core has a weight of about 4.3 grains and is formed from tin or a tin base alloy. 4. The bullet of claim 1, wherein the rear core substantially fills the boat-tail. 5. The bullet of claim 1, wherein the front core is formed from steel. 6. The bullet of claim 5, wherein the mid core has a weight of about 30 grains and is formed from: a high-density constituent material selected from the group of tungsten, tungsten carbide, carballoy, and ferro-tungsten; a second, lower-density constituent consisting of either a metallic matrix material or a plastic matrix material; and wherein the rear core has a weight of about 4.3 grains and is formed from tin or a tin base alloy. 7. The bullet of claim 1, wherein the mid core is formed from: a high-density constituent material selected from the group of tungsten, tungsten carbide, carballoy, and ferro-tungsten; and a second, lower-density constituent consisting of either a metallic matrix material or a plastic matrix material. 8. The bullet of claim 7, wherein the metallic matrix material is selected from the group consisting of: tin, zinc, iron, copper, and mixtures or alloys of one or more of the foregoing. 9. The bullet of claim 7, wherein the plastic matrix material is selected from the group consisting of: phenolics, epoxies, dialphthalates, acrylics, polystyrenes, polyethylene, or polyurethanes. 10. The bullet of claim 1, wherein the mid core is formed from one of: copper, bismuth, tin, gold, silver, pewter, bronze, and mixtures or alloys including one or more of the foregoing. 11. The bullet of claim 1, wherein the mid core is formed from an organic polymer filled with a metal. 12. The bullet of claim 1, wherein the rear core has a Brinell hardness less than about 50. 13. The bullet of claim 12, wherein the rear core is formed from tin or a tin base alloy. 14. The bullet of claim 12, wherein the rear core is formed from one of: copper, zinc, tin, and mixtures or alloys including one or more of the foregoing. 15. The bullet of claim 1, wherein a transition point between the generally cylindrical sidewall and the boat-tail is formed by a rebate in the generally cylindrical sidewall.