Letter: C

The free longitudinal movement of the cylinder in the frame.

In a revolver, the space between the cylinder and the barrel measured with the cylinder in the rearmost position.

In revolver-type firearms, the rotational movement of the cylinder to bring the next chamber into alignment with the bore.

The pin around which the cylinder of a revolver rotates. This is a feature found on revolvers in which there is no crane. Also called Axis Pin, Base Pin, Center Pin.

A device which permits the swinging out of the cylinder from the frame of a revolver.

A device to stop cylinder rotation in proper alignment with the barrel in a revolver. Sometimes called a Cylinder Latch or Cylinder Bolt.

One of the machined grooves on the circumference of a revolver cylinder that is engaged by the cylinder stop in order to assure barrel and chamber alignment. Also called Bolt Notch.

A multiple barrel firearm designed to fire different calibers or types of ammunition.

The chemical reaction of a fuel and oxygen, usually initiated by a heat source. In the context of interior ballistics, the result of this reaction is gas and heat generation, increasing pressure in an enclosed space.

A copper alloy with a nominal composition of 90 percent copper and 10 percent zinc. “Commercial Bronze” is the trade name for the Copper Development Association, Inc. Alloy C22000. It is used in the manufacture of bullet jackets. See also “Gilding Metal.”