Forster Headspace Gage .22-250 Rem - No Go 1.579

The Forster Headspace Gage .22-250 Rem – No Go 1.579 is a precision measurement tool designed for gunsmith chamber verification and reloading quality control. Headspace—the critical distance between the breech face and the cartridge base when the action is closed—directly impacts both safety and accuracy. Excessive headspace creates dangerous conditions: unsupported brass can rupture under firing pressure, venting high-velocity gas rearward and risking injury to the shooter. This No Go gage establishes the upper tolerance limit for chamber length, ensuring fired brass remains fully supported inside the chamber walls.

Forster Products manufactures this .22-250 Remington gage to tight dimensional tolerances (1.579-inch specification), allowing it to function as the definitive go/no-go standard for .22-250 chambers. The No Go variant serves as the upper limit—if a chamber accepts the No Go gage, headspace exceeds safe specifications. When used in conjunction with a Go gage, these instruments provide the complete picture of chamber condition. The compact design (3.05 x 0.85 x 3.2 inches) makes it practical for bench work, gunsmith operations, or reloader's benches where space and precision matter.

This tool is essential for anyone performing chamber work, barrel fitting, or precision reloading with .22-250 Remington rifles. Gunsmiths rely on headspace gages during barrel installations and chamber reaming to confirm proper dimensions before returning a rifle to service. Competitive shooters and handloaders use them to verify that fired brass remains within safe parameters, extending case life while preventing premature wear or catastrophic failure. The .22-250 Remington—a versatile varmint and light game cartridge—demands accuracy, and chamber verification is the foundation of reliable performance.