Bullet with controlled fragmentation
First Claim
1. A jacketed hollow-point bullet comprising:
- a core having a forward end and a rear end and intermediate side portions extending therebetween;
the forward end of the core defining a cavity;
a jacket encompassing the rear end and at least selected portions of the sides of the core;
the jacket having a sidewall having a first portion having a first wall thickness, and a second portion immediately forward of the first portion having a second wall thickness less than the first wall thickness;
the first portion having a forward edge defining a transition surface;
the exterior of the second portion of the jacket defining a cannelure groove encircling the bullet; and
the cannelure groove having a rear limit forward of the transition surface by less than the first wall thickness.
1 Assignment
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Accused Products
Abstract
A bullet with controlled fragmentation has a core in the form of a generally cylindrical body having a forward end and a rear end and intermediate side portions extending there between, the forward end of the core defining a cavity, a jacket encompassing the rear end and at least selected portions of the sides of the core, the jacket having a sidewall having a first drive band portion having a first wall thickness, and a second portion immediately forward of the drive band portion having a second thickness less than the first thickness, the exterior of the jacket defining a cannelure groove encircling the bullet, and the cannelure groove being positioned forward of the first drive band portion. The drive band may have forward edge defining a step. The bullet of the present invention may also be received in the case mouth of a rimless case and be partially protruding therefrom.
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Citations
17 Claims
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1. A jacketed hollow-point bullet comprising:
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a core having a forward end and a rear end and intermediate side portions extending therebetween; the forward end of the core defining a cavity; a jacket encompassing the rear end and at least selected portions of the sides of the core; the jacket having a sidewall having a first portion having a first wall thickness, and a second portion immediately forward of the first portion having a second wall thickness less than the first wall thickness; the first portion having a forward edge defining a transition surface; the exterior of the second portion of the jacket defining a cannelure groove encircling the bullet; and the cannelure groove having a rear limit forward of the transition surface by less than the first wall thickness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A jacketed hollow-point bullet comprising:
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a core having a forward end and a rear end and intermediate side portions extending therebetween; the forward end of the core defining a cavity; a jacket encompassing the rear end and at least selected portions of the sides of the core; the jacket having a sidewall having a first portion having a first wall thickness, and a second portion immediately forward of the first portion having a second wall thickness less than the first wall thickness; the first portion having a forward edge defining a transition surface; the exterior of the second portion of the jacket defining a cannelure groove encircling the bullet; and the cannelure groove having a rear limit forward of the transition surface by less than the width of the cannelure groove. - View Dependent Claims (12)
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13. A jacketed hollow-point bullet comprising:
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a core having a forward end and a rear end and intermediate side portions extending therebetween; the forward end of the core defining a cavity; a jacket encompassing the rear end and at least selected portions of the sides of the core; the jacket having a sidewall having a first portion having a first wall thickness, and a second portion immediately forward of the first portion having a second wall thickness less than the first wall thickness; the first portion having forward edge defining a transition surface; the exterior of the second portion of the jacket defining a cannelure groove encircling the bullet; and wherein the transition surface joins an inner surface of the second portion of the jacket at an acute angle. - View Dependent Claims (14)
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15. A jacketed hollow-point bullet comprising:
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a core having a forward end and a rear end and intermediate side portions extending therebetween; the forward end of the core defining a cavity; a jacket encompassing the rear end and at least selected portions of the sides of the core; the jacket having a sidewall having a first portion having a first wall thickness, and a second portion immediately forward of the first portion having a second wall thickness less than the first wall thickness; the first portion having forward edge defining a transition surface; the exterior of the second portion of the jacket defining a cannelure groove encircling the bullet; and wherein the axial distance between the transition surface and a rearmost portion of the cannelure is less than the radial distance between the interior of the second portion of the jacket at the transition surface and the deepest portion of the cannelure. - View Dependent Claims (16, 17)
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Specification