A container (e.g., an ammunition casing, a rocket housing, or the like) includes a body structure having a wall defining a cavity configured to accept an energetic material, the body structure having a central region situated longitudinally between a first side region and a second side region, wherein the wall within the central region has a thickness that is less than the thickness of the wall within first region and either less than or equal to the thickness within the second side region. A strength reduction pattern is formed at least partially within the central region of the wall such that the strength reduction pattern provides a preferred rupture path when the energetic material is subjected to a predetermined external stimulus.

A container (e.g., an ammunition casing, a rocket housing, or the like) includes a body structure having a wall defining a cavity configured to accept an energetic material, the body structure having a central region situated longitudinally between a first side region and a second side region, wherein the wall within the central region has a thickness that is less than the thickness of the wall within first region and either less than or equal to the thickness within the second side region. A strength reduction pattern is formed at least partially within the central region of the wall such that the strength reduction pattern provides a preferred rupture path when the energetic material is subjected to a predetermined external stimulus.

A novel castable frangible projectile and techniques for manufacturing such are provided. A cartridge system includes a case defining a volume, a propellant disposed in the volume of the case, and a projectile coupled to the case. The projectile includes a body disposed at least partially within the case and configured to enclose the propellant within the volume of the case. The body is formed of a castable eutectic mixture, the castable eutectic mixture configured to be melted and cast, wherein the body is configured to break into a plurality of fragments upon impact with a target.

A novel castable frangible projectile and techniques for manufacturing such are provided. A cartridge system includes a case defining a volume, a propellant disposed in the volume of the case, and a projectile coupled to the case. The projectile includes a body disposed at least partially within the case and configured to enclose the propellant within the volume of the case. The body is formed of a castable eutectic mixture, the castable eutectic mixture configured to be melted and cast, wherein the body is configured to break into a plurality of fragments upon impact with a target.

A base part intended for producing a cartridge case has a case base for receiving a primer, wherein a peripheral extractor recess is provided on the outer circumference of the base part. To simplify production, the extractor recess has a polygonal geometry that is formed in cross section by a closed traverse.

A base part intended for producing a cartridge case has a case base for receiving a primer, wherein a peripheral extractor recess is provided on the outer circumference of the base part. To simplify production, the extractor recess has a polygonal geometry that is formed in cross section by a closed traverse.

Disclosed is a cartridge case for various caliber ammunition that consists essentially of a powdered metal and/or powdered metal alloy that is formed into the cartridge case through an injection mold processing. Also disclosed is a method for forming a cartridge case, which may include use of Metal Injection Molding (“MIM”) processes to produce the cartridge case which retains a primer, propellant, and/or a bullet. The method can include metal injection molding an initial part, and also at least one of tapering and trimming the initial part to form the finished cartridge case. Further embodiments can include the use of Finite Element Method (FEM) analysis to develop an optimized MIM design.

Disclosed is a cartridge case for various caliber ammunition that consists essentially of a powdered metal and/or powdered metal alloy that is formed into the cartridge case through an injection mold processing. Also disclosed is a method for forming a cartridge case, which may include use of Metal Injection Molding (“MIM”) processes to produce the cartridge case which retains a primer, propellant, and/or a bullet. The method can include metal injection molding an initial part, and also at least one of tapering and trimming the initial part to form the finished cartridge case. Further embodiments can include the use of Finite Element Method (FEM) analysis to develop an optimized MIM design.

A headstamp marking method has the steps of fabricating a plurality of inventory cases, each of them being identical with a round surface, a bare metal head, and a body, and the cases being suitable for different caliber cartridges. The method then has trimming or necking the cases, selecting cases for manufacturing into cartridges, and inscribing, via a laser inscription device, the cases upon their heads. The laser inscription identifies at least the caliber of the cartridge and the number of the cases for manufacturing. The laser inscription device, while removing material of the head along its path, attains insufficient heat and thus avoids compromising the structure of the cartridges and igniting them. The laser inscription device aims and focuses its laser upon a common plane of a head while exhausting its heat through the material ejected from the head.

An ammunition cartridge for a gun is optically initiated by a mechanism wholly within the cartridge case itself. The case has as optical primer initiation means producing light fluence to ignite a primer, which ignited primer may in turn ignite into a flashtube, and which ignited flashtube may in turn ignite a bed of propellant in said cartridge. The optical primer initiation means may be an LED, a laser diode, a VCSEL, or some other light emitting device in general. The cartridge optically initiated primer package is so sized and made electrically and mechanically seamlessly physically compatible with current ammunition cartridges such that these new cartridges are completely interchangeable. If the cartridge primer initiation means is of a percussion type, the cartridge is adapted to include an in-line piezoelectric crystal so that electrical power will be generated when the cartridge assembly is struck by a firing pin during percussion type operations; the power is then used to initiate the light emitting device.