Proofing The Guns: London Proof House & Worshipful Company of Gunmakers

Published on March 29, 2017
Duration: 7:02

The London Proof House, established in 1637, is a critical facility for ensuring firearm safety in the UK. It tests firearm barrels and complete firearms by firing two specially loaded rounds with 25% more powder than standard. This process, mandated by the Firearm Acts of 1868 and 1978, verifies that components can withstand extreme pressure. The Proof Master oversees operations, while the Master's role is largely ceremonial. Proof marks are applied to components that pass the test, indicating their safety and compliance.

Quick Summary

The London Proof House, established in 1637, is responsible for proofing firearm barrels and complete firearms in the UK. This process, mandated by the Firearm Proof Acts of 1868 and 1978, involves firing two high-pressure rounds with 25% more powder to ensure components can withstand extreme stress. Successful completion results in a proof mark, indicating safety and compliance.

Chapters

  1. 00:00Introduction to the London Proof House
  2. 00:04History and Royal Charter of the Proof House
  3. 00:12Relocation Due to Explosion
  4. 00:36The Worshipful Company of Gunmakers as a Livery Company
  5. 01:08Role of the Proof House: Proofing Firearm Barrels
  6. 01:15Governing Legislation: Firearm Proof Acts
  7. 01:30The Proofing Process: Firing High-Pressure Rounds
  8. 02:06Testing Components: Barrels vs. Firearms
  9. 02:36Roles: Proof Master and Master
  10. 03:04Proof Masters Since 1637
  11. 03:24Scope of Testing: Calibers and Cannons
  12. 03:32Proof Marking: Hand Stamping and Engraving
  13. 04:47Business Breakdown: Military, Commercial, Bespoke
  14. 05:02Deactivated Firearms Certification
  15. 05:22Detailed Proofing Procedure
  16. 06:02Firing Mechanism and Safety
  17. 06:16Outcome of a Failed Proof Test

Frequently Asked Questions

What is the primary function of the London Proof House?

The primary function of the London Proof House is to proof firearm barrels and complete firearms. This involves firing specially loaded, high-pressure rounds to ensure the components can safely withstand extreme stress, a requirement mandated by UK law.

What legislation governs firearm proofing in the UK?

Firearm proofing in the UK is governed by the Firearm Proof Act of 1868 and the Firearm Proof Act of 1978. These acts legally require every firearm and barrel sold or manufactured within the UK to undergo the proofing process.

How are firearms tested for proof at the London Proof House?

Firearms and barrels are tested by firing two rounds loaded with approximately 25% more powder than standard. This high-pressure test is conducted in an isolated room with a bullet catcher to ensure the firearm or barrel can safely withstand the stress.

What is a proof mark and why is it important?

A proof mark is an official stamp applied to a firearm or barrel that has successfully passed the proofing test. It signifies that the component has met safety standards and can withstand the pressures of firing, providing assurance to the owner and authorities.

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