Abstract

Devices and methods for a bullet with a strengthened mouth for improved penetration and expansion. In embodiments, a portion of the jacket is folded to provide double walls at the mouth. In embodiments, the jacket and core are partially bonded and partially separated. The core comprises a forward portion defining a cavity forming a hollow point of the bullet. The jacket comprising: a rearward cup portion, an ogive portion, an end portion, and a plurality of skives. The ogive portion is forward of the rearward cup portion. The end portion is directly adjacent the tip portion of the core, the end portion of the jacket curling radially inwardly toward the central axis. The plurality of skives are formed in the ogive portion of the jacket.

IPC Classes  ?

• F42B 12/78 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets
• B21K 21/10 - Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs cone-shaped or bell-shaped articles, e.g. insulator caps
• F42B 5/28 - Cartridge cases of metal
• F42B 12/02 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
• B21K 21/06 - Shaping thick-walled hollow articles, e.g. projectiles
• F42B 10/32 - Range-reducing or range-increasing arrangementsFall-retarding means
• F42B 10/38 - Range-increasing arrangements
• F42B 10/42 - Streamlined projectiles

Abstract

Bismuth-based firearm projectiles, optionally firearm cartridges containing the same, and methods for forming bismuth-tin-copper alloys or bismuth-nickel alloys and bismuth-based firearm projectiles are disclosed herein. The bismuth-based firearm projectiles include a projectile body comprising a bismuth-tin-copper alloy or bismuth-nickel alloy that forms at least 90 wt% of the projectile body.

IPC Classes  ?

• C22C 12/00 - Alloys based on antimony or bismuth
• F42B 5/02 - Cartridges, i.e. cases with propellant charge and missile
• F42B 12/74 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
• F42B 12/78 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets