Lyman Case Length Headspace Gauge 6mm Creedmoor

To achieve the highest degree of safety and accuracy, Lyman recommends that all bottleneck rifle cases be inspected after resizing to ensure that the proper head-space dimension is maintained. Simply insert the case into the gauge to insure that it does not exceed the maximum or fall below the minimum allowable head-space. In addition, the gauge will identify a case which exceeds the maximum allowable case length.