Excessive headspace can pose significant safety risks and negatively affect the accuracy of a rifle. When there is too much headspace, the brass casing of a cartridge may not be fully supported. This can lead to the casing rupturing upon firing, causing gas to escape rearward in a manner similar to rocket exhaust. Such an event can be dangerous for the shooter and those nearby, highlighting the importance of proper headspace measurement.

Extensive range of rimless gauges in large calibers
Engineered from premium-grade, hardened steel and meticulously precision-ground to meet stringent ANSI and SAAMI specifications
The headspace tolerance is precisely ground to an exacting specification of +/-0.00015 inches
Each headspace gauge is meticulously inspected using NIST-certified measurement instruments

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