Upset jacketed bullet

• US 5,385,100 A
• Filed: 11/19/1993
• Issued: 01/31/1995
• Est. Priority Date: 04/02/1991
• Status: Expired due to Term

• Current Assignee: OLIN Corporation
• Original Assignee: OLIN Corporation
• Inventors: Dippold, Jack D., Schluckebier, David K., Corzine, Alan J.
• Primary Examiner(s): TUDOR, HAROLD JAY
• Application Number:
  US08/157,353
• Time in Patent Office: 438 Days
• Field of Search: 102/507-510, 102/514-517
• US Class Current: 102/507
• CPC Class Codes: F42B 12/34 expanding before or on impact, i.e. of dumdum or mushroom type
• CPC Class Codes: F42B 12/78 of jackets for smallarm bullets ; Jacketed bullets or projectiles
• CPC Class Codes: Y10T 29/49886 to roughen surface

Abstract

A full metal jacket hollow point bullet is disclosed which has a portion of the jacket extending within the hollow open front end of the bullet. The portion of the jacket in the hollow front end has a plurality of radial slits and reinforced pointed prongs therebetween. A rearwardly extending completely empty blind bore extends from the tips of the prongs axially rearwardly into the bullet core. The base of each of the prongs is reinforced at the mouth of the front end by a fillet on each side between the ogive portion of the jacket and the base of the prong in the hollow front end. These prongs project generally radially outward upon upset of the bullet in soft tissue after passing through barrier materials such as clothing and deer hide.

The jacket has a coating of copper oxide on its inner and outer surfaces which bonds the soft lead core to the jacket and minimizes lead wash.

Claims

1. An upset jacketed bullet, comprising:

a body generally symmetrical about a central axis having a mushroomed head; and

a plurality of jacket petals folded back from said body behind said mushroomed head, each of said petals terminating in a generally radially outwardly pointing curved prong extending from a hardened transition region wherein each of said prongs has at least one fillet at said hardened transition region extending between said petal and said prong, said prongs defining a diameter larger than a diameter of said mushroomed head.

2. The upset bullet according to claim 1 wherein said jacket has an inside surface coating of an oxide bonding said body to said jacket.

3. The upset bullet of claim 2 wherein said jacket also has an outside surface coating of an oxide.

4. The upset bullet of claim 3 wherein said inside surface coating and said outside surface coating are copper oxide.

5. The bullet of claim 4 wherein the transition region has at least two reinforcing fillets extending between said petal and said prong.

6. The upset bullet of claim 1 wherein said petals are generally symmetrical about a central axis.

7. The upset bullet of claim 6 wherein said prongs are pointed.