Determining Unknown Calibers with Cerrosafe

Published on December 13, 2017
Duration: 36:49

This video demonstrates the critical process of identifying unknown calibers on antique firearms using Cerrosafe. The expert successfully determined an antique German Cape Gun to be a 16-gauge smoothbore and a rare 20-gauge Paradox rifled caliber. The demonstration highlights the importance of chamber casting for accurate measurements and safe firearm restoration.

Quick Summary

Cerrosafe is a low-melt alloy used in gunsmithing to create precise casts of firearm chambers and bores. By melting and pouring Cerrosafe into the firearm's action, you can obtain an exact impression of the internal dimensions, allowing for accurate caliber identification without damaging the antique firearm.

Chapters

  1. 00:00Intro: Antique German Cape Gun
  2. 01:32Identifying the Firearm Type
  3. 02:51Initial Gauge Inspection
  4. 05:49Safety Check: Sounding Barrels
  5. 09:47Cerrosafe Casting Process
  6. 14:39Analyzing Measurements & Caliber ID
  7. 18:41Headspace & Custom Loading
  8. 22:44Range Testing & Conclusion

Frequently Asked Questions

What is Cerrosafe and how is it used for caliber identification?

Cerrosafe is a low-melt alloy used in gunsmithing to create precise casts of firearm chambers and bores. By melting and pouring Cerrosafe into the firearm's action, you can obtain an exact impression of the internal dimensions, allowing for accurate caliber identification without damaging the antique firearm.

How can you identify an antique German Cape Gun?

An antique German Cape Gun is typically identified by its combination of a smoothbore and a rifled barrel, often featuring Damascus barrels. Maker's marks like 'C. Freyer, Dresden' and specific design elements, such as the placement of the rifled barrel, confirm its German origin and type.

What is the 'sounding' test for Damascus barrels?

The 'sounding' test involves gently tapping Damascus barrels with a mallet. A clear ringing sound indicates intact solder joints between the barrel tubes, signifying good structural integrity. A dull thud suggests potential delamination or corrosion, posing a safety risk.

What caliber was the antique German Cape Gun identified as?

The antique German Cape Gun was identified as a 16-gauge smoothbore in the left barrel and a rare 20-gauge Paradox round in the right rifled barrel. Measurements from the Cerrosafe cast confirmed a 0.627-inch groove diameter and a 1.3-inch chamber length for the rifled barrel.

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