The Forster .22 Rimfire GO Headspace Gauge (Forster Products part no. HG22RIMG) lets a gunsmith or handloader verify that a .22 rimfire chamber is cut within SAAMI industry-standard headspace tolerances before ammunition is fired through it. Forster Products manufactures this gauge to exacting standards, since excessive headspace can allow unsupported brass to rupture and vent gas rearward toward the shooter. If the rifle’s action closes on this GO gauge, the chamber is cut to accept any ammunition manufactured within SAAMI specifications. It’s an essential tool for anyone chambering, rebarreling, or inspecting a .22 rimfire action rather than assuming factory-correct headspace.

Key Specifications

• Ground to a GO gauge tolerance specifically for .22 rimfire chambers.
• Ships as a single gauge, ready to use straight out of the box.
• Weighs a mere 0.025 pounds, small enough to keep in a range bag or gunsmithing kit.

Frequently Asked Questions

What does it mean if my rifle’s action closes on this gauge? It means the chamber accepts any ammunition manufactured within SAAMI industry-standard specifications.

Is this a GO or NO-GO gauge? This is the GO gauge; a separate NO-GO or FIELD gauge is used to check for excessive headspace.

Who should use a headspace gauge like this? Anyone chambering, rebarreling, or inspecting a .22 rimfire action, since excessive headspace can be dangerous.

Buy the Forster .22 Rimfire GO Headspace Gauge

Don’t assume factory-correct headspace on a rebarrel or chamber job; verify it with this precision Forster Products gauge. Browse our full range of reloading equipment and order it from our Lubbock, Texas gun shop for fast, insured shipping.