LONG-RANGE PRECISION FIREARM CARTRIDGE

摘要

A long-range precision firearm cartridge case including a cylindrical body portion with a head end and an opposite end, the cylindrical body portion having a central aperture extending into the head end for receipt of a primer, and the cylindrical body portion having a cartridge extraction groove formed around the periphery of the body portion adjacent the head end. The case including a cylindrical neck portion and a frusto-conical shoulder portion integrally formed with the body portion and the neck portion. The shoulder portion tapers radially inwardly from the opposite end of the body portion to the cylindrical neck portion. The neck portion extends longitudinally from the shoulder portion to define a projectile receiving end. The frusto-conical shoulder portion is constructed to form a shoulder angle with a longitudinal axis of the body portion, the shoulder angle being greater than 30 degrees and no greater than ninety degrees.

主权项

1. A long-range precision firearm cartridge case comprising:
a cylindrical body portion with a head end and an opposite end, the cylindrical body portion having a central aperture extending into the head end for receipt of a primer, and the cylindrical body portion having a cartridge extraction groove formed around the periphery of the body portion adjacent the head end; a cylindrical neck portion; a frusto-conical shoulder portion integrally formed with the body portion and the neck portion, the shoulder portion tapering radially inwardly from the opposite end of the body portion to the cylindrical neck portion; the neck portion extending longitudinally from the shoulder portion to define a projectile receiving end; and the frusto-conical shoulder portion constructed to form a shoulder angle with a longitudinal axis of the body portion, the shoulder angle being greater than 30 degrees and no greater than ninety degrees.