Forster Products - SAAMI Dimensioned Headspace Gages (Rimless)

SAAMI Dimensioned Headspace Gages (Rimless)

Whether your chambering a new barrel, inspecting a new rifle, or conducting routine maintenance the SAAMI Rimless Headspace Gage will provide the confidence you need for safe and consistent results. Fosters Products has decades of manufacturer expertise and a respected name in gunsmithing and reloading tools. They deliver unmatched reliability and ensuring your chamber measurements are accurate the first time.

“Headspace” is the distance between the face of the breech and the base of the cartridge when the action is closed, and excessive headspace can be dangerous as well as impair accuracy. For instance, unsupported brass fired in a rifle action with excessive headspace can rupture, allowing gas to blow rearward like rocket exhaust. Because your safety is on the line, Forster Headspace Gages are made with painstaking care and exacting manufacturing standards to ensure accurate testing of your rifle’s chamber.

If a rifle closes on a GO gage, the rifle chamber will accept any ammunition that is made within SAAMI (industry standard) specifications. If a rifle closes on a NOGO gage, the rifle chamber might have excessive headspace. Most gunsmiths chamber a rifle’s headspace between the GO and NOGO dimensions. If a rifle closes on a FIELD gage, the rifle chamber is dangerously close to or already over the SAAMI specified maximum chamber size.