Bullet jacket and method for the manufacture thereof
First Claim
1. A bullet jacket formed from a jacket material, the jacket comprising a solid base portion and an axially opposite end portion having an outer lip at an upper edge thereof, said end portion defining a cavity in the bullet jacket wherein said cavity has an opening in a direction towards the end portion and a length which comprises 45 to 70 percent of the total length of the bullet jacket.
1 Assignment
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Accused Products
Abstract
A bullet jacket, and method of making a bullet jacket are disclosed, wherein bullets placed therein will, when fired, expand at low velocities, while maintaining high weight retention at higher velocities. The bullet jacket is preferably made of a copper based material, and comprises a solid base portion and an upper end portion defining a cavity therein, in which a bullet core material is located. The walls of the cavity decrease in width away from the base and curve inwardly to form an ogive shape. The length of the cavity section of the bullet jacket is between 58 to 61 percent of the total length of the bullet jacket, and the total weight of the solid base portion of the bullet jacket is between 48 to 52 percent of the total weight of the bullet jacket. The bullet core is made by using conventional means to seat and enclose the bullet core within the bullet jacket of the present invention. In manufacturing the bullet jacket, the jacket mouth or lip thickness is made to be between 0.025 to 0.060 of an inch. Four to 6 cuts are used to cut the jacket lip to a minimum depth of 0.015 inch to a maximum depth of 0.450 inch.
14 Citations
21 Claims
- 1. A bullet jacket formed from a jacket material, the jacket comprising a solid base portion and an axially opposite end portion having an outer lip at an upper edge thereof, said end portion defining a cavity in the bullet jacket wherein said cavity has an opening in a direction towards the end portion and a length which comprises 45 to 70 percent of the total length of the bullet jacket.
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13. A method of manufacturing a bullet jacket comprising the steps of placing one or more lengths of forming material in a forming die;
- and forming the bullet jacket from the forming material, wherein the bullet jacket is formed to comprise a solid base portion and an axially opposite end portion having an outer lip at an upper edge thereof, the end portion defining a cavity having an opening directed towards the end portion and a length which comprises 45 to 70 percent of the total length of the bullet jacket.
- View Dependent Claims (14, 15, 16, 17, 18)
Specification