The Sinclair Chamber Length Gauge helps handloaders determine the true chamber length from the bolt face to the chamber's neck end, indicating potential excess case length.
Constructed from 12L14 soft steel to prevent chamber damage, the gauge is reusable and comes with step-by-step instructions for ease of use.
Specific caliber restrictions apply; the 22 caliber gauge cannot be used with thin-necked cases, and the 30 caliber gauge is not suitable for the 30-30 Winchester.