Forster Products 6.5 Prc No Go Headspace Gauge Headspace Gauge Steel

The Forster Products 6.5 PRC No-Go Headspace Gauge is a precision steel measuring tool built to verify that your rifle chamber doesn't exceed the maximum safe headspace specification. If you're a reloader, gunsmith, or serious rifle builder working with 6.5 PRC, this No-Go gauge is essential for quality control—it tells you when a chamber has grown beyond its upper tolerance limit and the bolt should not close on it. Used alongside a Go gauge, it lets you confirm your chamber falls within the SAAMI specification window that keeps rounds firing safely and accurately.

Headspace creep is real, especially after firing and resizing ammunition repeatedly. The No-Go gauge catches chambers that have opened up, preventing the kind of case ruptures, misfires, and accelerated wear that happen when headspace drifts too far. Whether you're chambering a new barrel, verifying a used rifle before purchase, or performing routine maintenance on your reloading setup, this gauge gives you the confidence that your 6.5 PRC is in spec and ready to shoot.

Forster's headspace gauges are machined to exacting SAAMI standards and hardened from high-grade steel, so they hold their precision through years of repeated use. The gauge is purpose-built for the 6.5 PRC cartridge and calibrated to that standard—not a generic tool. If you reload or build rifles seriously, it belongs in your kit.

Key Features

• Hardened steel construction for durability and consistent accuracy over repeated use
• Machined to SAAMI specification for 6.5 PRC
• No-Go configuration: bolt should NOT close on this gauge; if it does, chamber is out of spec
• Essential companion to a Go gauge for complete headspace verification
• Precision tool for gunsmiths, reloaders, and rifle builders

Specifications

Frequently Asked Questions

What's the difference between a Go and No-Go headspace gauge?

The Go gauge confirms your chamber meets the minimum size and will safely chamber and fire a round. The No-Go gauge verifies the chamber hasn't exceeded the maximum safe headspace—the bolt should NOT close on a No-Go gauge. Using both together gives you a complete picture of whether your chamber is within spec.

Why do I need a headspace gauge for my 6.5 PRC?

Headspace grows as you fire and resize brass. Over time, a chamber can open up beyond safe limits, causing case ruptures, misfires, and accelerated wear. A No-Go gauge catches that drift before it becomes dangerous, whether you're checking a new build, a used rifle, or your reloading work.

Is this gauge specific to 6.5 PRC?

Yes. This gauge is machined to SAAMI specification for 6.5 PRC and calibrated for that cartridge only. Do not use it to measure headspace in other calibers.

What's included with this gauge?

You receive the No-Go headspace gauge itself. A Go gauge is sold separately if you want to perform a full headspace check.