Sub-sonic bullet casing
AssigneeHornady Manufacturing Company
InventorsJayden Quinlan, Brendan Meyer
Life of this patent
Estimating the term…
Abstract
The invention involves a cartridge case and ammunition that can provide multiple projectile speeds from a single cartridge case. The cartridge case includes an insert that may be molded to or inserted within the cartridge case to allow for variable powder loads. The variable powder loads provide the user with the ability to load cartridge cases for different projectile velocities, including sub-sonic, while still providing sufficient fill inside the cartridge case for desired powder burn rate; the proper and desired burn rate of the powder providing proper breech and barrel pressures for the desired projectile velocity. The cartridge cases are constructed to be loaded with standard and pre-existing loading tools and are reloadable.
Claims14
A cartridge case for a firearm having reduced internal volume comprising:
- the cartridge case including a case head, the case head including a primer pocket, a cartridge case wall integrally formed to the case head, the cartridge case wall being tubular in construction, the cartridge case wall extending between the case head and a shoulder portion which reduces the diameter of the cartridge case wall while still maintaining the tubular shape, the shoulder portion transitioning to a neck portion integrally formed to the shoulder, the neck portion maintaining the tubular construction and extending substantially parallel to the cartridge case wall, terminating in a cartridge case mouth for accepting and locating a bullet assembly, the cartridge case defining a propellant chamber including an inner surface defining a first volume, a propellant fill adapter positioned within the propellant chamber for reducing the volume of propellant that will fit into the cartridge case defining a second volume.
Dependencies are inferred from the claim text.