How To Use Brownells Cerrosafe Alloy

Published on January 3, 2017
Duration: 10:50

This video demonstrates the effective use of Brownells Cerrosafe alloy for diagnosing and clearing firearm chamber obstructions. By casting the chamber, the presenter successfully identified and removed a brass ring fragment that prevented a CZ 75 from going into battery. The process involves melting the low-melting-point alloy and carefully pouring it into the chamber to create an exact replica of any obstruction.

Quick Summary

Brownells Cerrosafe is a low-melting-point alloy (158°F-190°F) used for precise firearm chamber casting. It helps diagnose obstructions by creating an exact replica, which is then tapped out after cooling, allowing for effective removal of issues like case head separations.

Chapters

  1. 00:00Intro: Cerrosafe Alloy & CZ 75 Problem
  2. 00:45Borescope Diagnosis: Identifying the Obstruction
  3. 02:08Cerrosafe Properties & Preparation
  4. 03:28Casting the Chamber with Cerrosafe
  5. 07:38Removing the Cast & Obstruction
  6. 08:47Range Test & Maintenance Tips

Frequently Asked Questions

What is Brownells Cerrosafe alloy used for?

Brownells Cerrosafe is a low-melting-point alloy used primarily for creating precise casts of firearm chambers. This is invaluable for diagnosing obstructions, such as case head separations or foreign objects, that prevent a firearm from cycling correctly.

How do you use Cerrosafe to remove a chamber obstruction?

First, plug the barrel and heat the chamber slightly. Then, melt the Cerrosafe alloy and pour it into the chamber, ensuring it captures the obstruction. Once cooled, the alloy cast can be tapped out, revealing the obstruction for removal.

What temperature does Cerrosafe melt at?

Brownells Cerrosafe alloy has a low melting point, typically ranging between 158°F and 190°F. This low temperature allows it to be melted safely with a simple propane torch without damaging the firearm.

How can you identify a chamber obstruction without casting?

A borescope is an effective tool for visually inspecting the firearm's chamber. It can reveal issues like brass fragments, heavy fouling, or other debris lodged in the chamber that might be causing cycling problems.

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