The Forster .223 Rem FIELD Headspace Gage (Forster part no. HG0223F) measures headspace, the distance between the breech face and the base of the cartridge when the action is closed, on a rimless .223 Rem chamber. Excessive headspace is a real safety issue: unsupported brass fired in an over-headspaced chamber can rupture and blow gas rearward toward the shooter. Forster machines this gauge to exacting tolerances so a gunsmith or serious handloader can confirm exactly where a chamber falls against SAAMI specification before it ever gets fired.

Key Specifications

• Chambered for .223 Rem, rimless case type.
• Gauge type is FIELD.
• Overall length is 1.47 inches.
• Manufactured to exacting, repeatable tolerances for a reliable go/no-go read.

Frequently Asked Questions

What does a FIELD gauge tell me? A rifle chamber that closes on a FIELD gauge is dangerously close to or already past the SAAMI-specified maximum chamber size and should be inspected by a gunsmith.

What is headspace? Headspace is the distance between the face of the breech and the base of the cartridge when the action is closed; excessive headspace is a safety and accuracy concern.

Buy the Forster .223 Rem FIELD Headspace Gage

Order the Forster .223 Rem FIELD Headspace Gage from our Lubbock, Texas gun shop, and we will get it packed and shipped to your door quickly and insured. Browse our other reloading equipment lineup for more chamber-checking and case-prep tools.