Forster's precision headspace gage for 7.62x54 Russian rimmed cartridges. Field-length gage identifies dangerous chamber wear and excessive headspace conditions that compromise safety and accuracy.
Headspace—the distance between the breech face and the cartridge base when the action closes—is critical to safe rifle operation. Excessive headspace creates dangerous conditions: unsupported brass can rupture, allowing high-pressure gas to escape rearward with potentially catastrophic results.
Forster Headspace Gages are manufactured with meticulous attention to precision and exacting standards. Each gage is engineered to provide accurate, reliable chamber measurements that you can trust with your safety.
GO Gage: If your rifle closes on the GO gage, the chamber accepts all ammunition manufactured to SAAMI (industry standard) specifications.
NOGO Gage: If your rifle closes on the NOGO gage, the chamber may have excessive headspace and should be inspected by a qualified gunsmith.
FIELD Gage: If your rifle closes on the FIELD gage, the chamber is dangerously close to or has already exceeded SAAMI maximum specifications. This condition requires immediate professional attention.
Most gunsmiths chamber rifles with headspace falling between GO and NOGO dimensions. The FIELD gage identifies chambers that have worn beyond safe limits or were improperly chambered.
This 7.62x54 Russian gage is essential for anyone reloading, gunsmithing, or maintaining rifles in this caliber.