Forster Products manufactures precision headspace gauges engineered to maximize safety and accuracy in rifle chambers. This No-Go Gauge accommodates 243 Win, 260 Rem, 7-08 Rem, 308 Win, and 358 Win calibers, serving as an essential tool for gunsmiths and serious reloaders. Machined from A2 tool steel and held to tolerances within 0.00015″, it delivers accurate testing of your rifle’s chamber dimensions.
The No-Go Gauge is sized to maximum recommended headspace dimensions (not a SAAMI maximum measurement). If a rifle will chamber the no-go gauge, it may still be within specifications, or this could indicate excessive headspace. These gauges are necessary when finish chambering a barrel or when checking the chamber of a used gun to ensure headspace dimensions are within safe limits. When properly used alongside GO and FIELD gauges, this tool provides the definitive measure of chamber safety and accuracy.
Manufactured from hardened steel and precision ground to ANSI and SAAMI tolerances with headspace tolerance ground to ±.00015″, each gauge is thoroughly inspected using NIST-certified measurement tools to ensure the highest quality. At 1.634″ in length, this compact gauge fits easily in any gunsmith’s toolkit.
