Brownell's Cerrosafe Chamber Casting Alloy
This guide details how to perform a chamber cast using Brownells' Cerrosafe alloy on a Mosin Nagant barreled action. The process involves carefully melting and pouring the alloy into the chamber to create a precise mold. This cast can then be used to identify the firearm's caliber and measure critical dimensions like bore diameter and freebore, serving as an alternative to traditional slugging.











