Why do we know so little about this gun? With firearms and weaponry expert, Jonathan Ferguson

Published on February 8, 2023
Duration: 25:36

This guide details the disassembly and analysis of an unidentified early 20th-century prototype rifle from the Royal Armouries collection. Expert Jonathan Ferguson guides viewers through examining its unique recoil-operated toggle action, internal components, and the .400/.375 H&H caliber. The analysis suggests a potential link to Lazare Jovanovic's patents and highlights the challenges of early self-loading firearm development.

Quick Summary

Firearms expert Jonathan Ferguson analyzes an unknown early 20th-century prototype rifle from the Royal Armouries. It features a unique recoil-operated internal toggle action, is chambered in .400/.375 H&H, and shows signs of stress from powerful test rounds, possibly linking it to designer Lazare Jovanovic.

Chapters

  1. 00:00Introduction to the Mystery Gun
  2. 01:19Physical Overview and Stock Design
  3. 03:01Receiver and Action Mechanism
  4. 05:33Demonstrating the Toggle Action
  5. 08:36Internal Components and Firing System
  6. 12:00Caliber Identification
  7. 15:31Potential Designer: Lazare Jovanovic

Frequently Asked Questions

What is unique about the action of the unknown prototype rifle?

The rifle features a recoil-operated, internal toggle action housed entirely within the receiver. This 'knee-joint' mechanism allows the barrel and action to recoil together before unlocking the breech, managing high chamber pressures effectively.

What caliber is the unknown prototype rifle chambered in?

A chamber cast revealed the rifle is chambered in .400/.375 H&H Belted Rimless Nitro Express. This cartridge, introduced by Holland & Holland in 1905, suggests the rifle was likely intended as a sporting or hunting firearm.

Who might have designed the unknown prototype rifle?

Based on mechanical similarities, particularly the internal toggle system and the use of a secondary spring in the buttstock, firearms expert Jonathan Ferguson suggests a potential connection to Lazare Jovanovic, referencing his 1933 patent for an 'Automatic Firearm'.

What condition issues were noted on the prototype rifle?

The rifle exhibits a roughly finished Monte Carlo stock with visible rasp marks and bare steel receiver with milling marks. Notably, evidence of 'peening' on the receiver suggests it was test-fired with powerful rounds that exceeded the capacity of the unhardened steel.

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