12 - Gauge Shotshell Gauge Check
The 12-gauge shotshell gauge checks the entire shotshell, not just the diameter of the head. The gauge is machined to minimum SAAMI chamber specs. This gauges all 12-gauge shotshells in 2 3⁄4- and 3-inch lengths, including both low brass and high brass hulls. CNC machined from 6061-T6 aluminum, the case gauges are finished off with a red anodized coating for a nice clean finish.