Merckelbagh Needlefire Conversion Rifle

Published on March 3, 2019
Duration: 10:42

This guide details the disassembly and reassembly of the Merckelbagh Needlefire Conversion Rifle's bolt mechanism, based on Ian McCollum's demonstration. It covers the unique pivoting bolt action and the function of the Chassepot-derived obturator. The video highlights the rifle's historical context as a conversion of a French Model 1822, emphasizing its rarity and transitional technology.

Quick Summary

The Merckelbagh Needlefire Conversion Rifle is a rare firearm that converted older percussion rifles to a needlefire system using combustible paper cartridges. Its unique pivoting bolt action features an obturator, inspired by the Chassepot, to seal the breech. Chambered in 17.6mm, it represents a transitional technology before metallic cartridges became standard.

Chapters

  1. 00:00Introduction to Needlefire Rifles
  2. 01:53The Merckelbagh Conversion
  3. 02:08Bolt Mechanism and Loading
  4. 03:44Markings and Identification
  5. 04:57Technical Features
  6. 05:23Bolt Disassembly and Obturator System
  7. 07:55Host Rifle History
  8. 08:23Historical Context and Rarity

Frequently Asked Questions

What is a Merckelbagh Needlefire Conversion Rifle?

The Merckelbagh Needlefire Conversion Rifle is a rare firearm from a transitional period, converting older percussion rifles (like the French Model 1822) to a needlefire system using combustible paper cartridges, patented around 1871.

How does the bolt mechanism of the Merckelbagh Needlefire Conversion Rifle work?

The bolt operates via a pivoting action: lift the handle vertically, pull back slightly, then pivot the entire bolt assembly out of the receiver for loading. Closing the bolt drives the needle forward to fire.

What is the purpose of the obturator in the Merckelbagh rifle?

The obturator, a rubber ring inspired by the Chassepot system, expands under gas pressure when fired. This creates a seal at the breech, preventing gas from escaping backward and improving efficiency.

What caliber is the Merckelbagh Needlefire Conversion Rifle?

The Merckelbagh Needlefire Conversion Rifle is chambered in 17.6mm caliber. It retains iron hardware, including a rear sight graduated up to 1000 meters.

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