Patent ID: 8011301

Claim:
A cartridge case, with a head end and a mouth end longitudinally separated, for a firearm and formed to contain a .338 caliber bullet, the case including: a cylindrical body portion extending longitudinally from the head end toward the mouth end and having a central aperture in the head end for receipt of a primer in communication with an interior volume, and a cartridge extraction groove formed around the periphery of the body portion adjacent the head end; a frusto-conical shoulder portion formed integral with the body portion and extending longitudinally from the body portion toward the mouth end, the shoulder portion tapering radially inwardly from the body portion; a generally cylindrical, bullet receiving neck portion extending longitudinally from the shoulder portion to the mouth end and terminating at the mouth end; the length of the body portion being approximately 1.8732−1.8813 inches and the outside diameter of the body portion at the shoulder portion being 0.5709±0.0059 inches, the length of the shoulder portion being approximately 0.2727 inches, the length of the neck portion being approximately 0.3381 inches, and the outside diameter of the neck portion being 0.3669 inches, with the overall length of the case being 2.4921±0.0118; and the case enclosing a volume designed to receive an amount of propellant in a range of 82.0 grns to 97.8 grns.