This precision tool shows you to check all the critical dimensions that make a shotgun pattern well. Measures choke, bore diameter, chamber and forcing cone dimensions. Accurate to .001 of an inch. This 4 gage set includes 12, 20, 28 and 410 and comes packaged in a solid oak case with solid brass hardware. Comes with instruction and extensive information for American and foreign guns.4 Gauges, 12, 20, 28, & 410
Solid oak case with brass hardware.
Instructions included for American and foreign guns.
Measures chokes, bore diameter, and chamber and forcing core diameter.
Accurate to .001"