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The shell body dropped to the ground mostly intact and the bullets continued in an expanding cone shape before striking the ground over an area approximately 250 yards × 30 yards in the case of the US 3-inch shell. [34] The effect was of a large shotgun blast just in front of and above the target, and was deadly against troops in the open.
Rim lock is where the rim of the shell casing gets caught on the extractor groove of the casing underneath it. It is a common issue for calibers with large rims, such as 7.62×54mmR, or guns that have been rechambered for cartridges shorter than intended without replacing the original magazine with one that compensates for the shorter round.
Cartridge: The assembly consisting of a bullet, gunpowder, shell casing, and primer. When counting, it is referred to as a "round". Caseless ammunition: A type of small arms ammunition that eliminates the cartridge case that typically holds the primer, propellant, and projectile together as a unit. Casket magazine: A quad stack box magazine.
Caseless ammunition is an attempt to reduce the weight and cost of ammunition by dispensing with the case, which is typically precision made of brass or steel, as well as to simplify the operation of repeating guns by eliminating the need to extract and eject the empty case after firing. [2]
An extractor also performs the function of an ejector in revolvers. When the striking force applied to the ejector rod is hard and fast enough, the extractor will typically eject the empty case(s) from the cylinder. Some break-action shotguns are also designed to eject empty shells completely out of the chamber when the barrel is opened.
An assortment of snap caps of varying calibers, from left: (1st row) .22 LR, 9mm (both), .45 ACP, (2nd row) 30-06 (both), (3rd row) 12 Ga. A snap cap is a firearm accessory device shaped like a standard cartridge/shotshell but contains no functional components, namely the primer, propellant and projectile (bullet or slug).
A transparent plastic housing around an electronic device. In engineering, a housing or enclosure is a container, a protective exterior (e.g. shell) or an enclosing structural element (e.g. chassis or exoskeleton) designed to enable easier handling, provide attachment points for internal mechanisms (e.g. mounting brackets for electrical components, cables and pipings), maintain cleanliness of ...
Later French headstamps mark the 1-digit Quarter of the year of production and 2-digit Year at the 12-o'clock position (e.g. Q-YY), the letter code for the metal supplier for the case at the 3-o'clock position, the cartridge caliber and model at the 6-o'clock position, and the manufacturer at the 9-o'clock position.