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.
A powder and shot separator of a shallow cup design which when loaded with lips down acts to help seal powder gases and so protect the rear of the shot column.
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.
Checkering which is cut with a tool into the surface, either by hand or machine, rather than impressed.
A choke formed by a reamer during manufacture of the barrel of a shotgun.
A generally circumferential separation in the side wall of a cartridge case. May be complete or partial.