Brownells Cerrosafe Chamber Casting Alloy 1/2 lb

Cerrosafe is a low-melting-point alloy designed for casting accurate chamber impressions in firearms. When poured into the chamber, it expands slightly upon cooling to provide a precise replica of the chamber dimensions, making it an essential tool for gunsmiths diagnosing headspace issues, identifying unknown chambers, or verifying chamber specifications. Sold in a 1/2 lb quantity, compatible with a wide range of rifle, pistol, and shotgun chambers.