Jan 20, 2026

US12529549 - Tool and method for producing a projectile and projectile

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A projectile may be formed having a caliber in the range from 4.6 mm to 20 mm for ammunition. The projectile may be a deformation bullet, a partial fragmentation bullet, a partial or full jacket bullet, a hard-core bullet or tracer bullet. The projectile may be formed by cold forming, in particular extrusion, from an intermediate with a tube section of substantially constant wall thickness, which constitutes at least 50% of the longitudinal extension of the intermediate.

Assignee: RWS GmbH
Inventors: Stephan Gelfert, Donald Meyer

ammunitionprojectilecoldforming

The patent describes a method for producing a cold-formed projectile for ammunition, which features a central cavity and a bullet jacket with specific geometric characteristics. The projectile can vary in caliber from 4.6 mm to 20 mm and is formed from an intermediate tube section with a constant wall thickness, ensuring structural integrity and performance.

Claim 1

1 . A cold-formed projectile for ammunition, comprising: a central cavity; and a bullet jacket surrounding the central cavity, the bullet jacket including an ogive-shaped bullet front and an adjoining bullet rear with a solid rear portion leading to a bullet bottom, wherein the cold-formed projectile is cold formed from an intermediate with a tube section of constant wall thickness, which constitutes at least 50% of a longitudinal extension of the intermediate, an outer diameter of the intermediate corresponding to a caliber of the projectile, wherein an inner tube diameter is at most 50% of an outer tube diameter of the tube section, and wherein an inner cross-section of the tube section is point-symmetrical, deviates from a circular shape, and is constant in a direction of the longitudinal extension. a central cavity; and a bullet jacket surrounding the central cavity, the bullet jacket including an ogive-shaped bullet front and an adjoining bullet rear with a solid rear portion leading to a bullet bottom, wherein the cold-formed projectile is cold formed from an intermediate with a tube section of constant wall thickness, which constitutes at least 50% of a longitudinal extension of the intermediate, an outer diameter of the intermediate corresponding to a caliber of the projectile, wherein an inner tube diameter is at most 50% of an outer tube diameter of the tube section, and wherein an inner cross-section of the tube section is point-symmetrical, deviates from a circular shape, and is constant in a direction of the longitudinal extension.

Google Patents

https://patents.google.com/patent/US12529549

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12529549