Rim Gauges for Shotgun Chambers
These gauges are used to determine the minimum or maximum depth of the rim of shotgun chambers.
The control of the depth of the rim recess is important for the headspace tolerance, which is 0,20mm for breech and 0,35mm for self loading shotguns.
The correct depth of the rim is achieved when the gun can be closed with the minimum gauge inside the chamber and cannot be closed with the maximum gauge inside.
This gauge is available as minimum type and maximum type. They are always used as a pair.
Gauge for the Minimum Chamber Length of Shotgun Chambers
This gauge is used to determine the depth of shotgun chambers. If the chamber has the exact length, the marking ring must correspond with the breech face.
This gauge is available as minimum type and maximum type.
The diameter and the length are minimum.
The gauge shows the minimum length of the chamber for all lengths of the corresponding caliber.
Gauge for the Forcing Cone of Shotgun Chambers
This gauge is used to determine the depth of shotgun chambers. If the chamber has the exact length, the marking ring must correspond with the breech face.
This gauge is available as minimum type and maximum type.
The diameter and the length are minimum.
The gauge shows the minimum length of the chamber for all lengths of the corresponding caliber.
Gauge for Diameters of Shotgun Chambers
This gauge checks the diameter D of the camber.
Shotgun chambers have a minimum and a maximum diameter, fixed by the CIP.
The gauge should reach the breech face with the first ring for the minimum diameter.
The second ring shows the maximum diameter.