Clymer NGBLT NO GO, Magnum See Specs for Cartridges
Absolutely Essential For Accurate, Safe, Chamber Work
The only way to accurately measure and test the length of the chamber of the rifle. Essential when chambering a new barrel to ensure a tight, accurate, safe chamber. Whenever you buy a used gun, always check the headspace before firing. Gauges are etched with Go or No-Go and caliber/gauge name for easy identification. Both Forster and Clymer gauges are made to SAAMI specs.
Additional part numbers for Magnum No Go Clymer Headspace Gauge: 184-100-321WB