Letter: C

The opening in the case into which the projectile or shot is inserted.

A manual operation performed on cartridge cases prior to reloading to ease insertion of projectiles or chambering. Can be internal and/or external.

The angled or tapered section of a bottleneck cartridge case connecting the main body of the case to the smaller diameter neck.

A longitudinal rupture in the wall of a cartridge case or shotshell.

The elongation in the body of a cartridge case during firing.

The gradual reduction in diameter of a cartridge case from head to shoulder or mouth.

A devise used to remove material from the case mouth in order to shorten the case to within the max and min specification for that particular case.

Ammunition that has the propellant charge attached to the bullet and not enclosed in any type of cartridge case.

1. A term used to designate the specific cartridge(s) for which a firearm is chambered. 2. Firearms: The approximate diameter of the circle formed by the tops of the lands of a rifled barrel, often expressed in hundredths of an inch (“.38 Caliber”) or millimeters (“7mm Caliber). 3. Ammunition: A numerical term included in a cartridge name to indicate a rough approximation of the bullet diameter.

A type of lock found in certain breechloaders, such as the 1873 Springfield. See Trap Door Action.