Older Gun With Newer Ammo: A Centerfire Winchester 1866

Published on October 19, 2022
Duration: 6:47

This video details a centerfire conversion of a Winchester 1866 rifle, a successor to the Henry. The conversion involved replacing the original rimfire firing pin mechanism with a single central pin and modifying the bolt face. Serial number analysis suggests this specific rifle was likely converted by a gunsmith rather than a factory option, highlighting the adaptability of these historical firearms.

Quick Summary

The Winchester 1866 was originally chambered for .44 Henry rimfire. Centerfire conversions, often done by gunsmiths, involve replacing the dual rimfire firing pins with a single central pin and modifying the bolt face to accommodate the new system, enabling the use of more modern ammunition.

Chapters

  1. 00:00Introduction to the Winchester 1866
  2. 01:00Transition to Centerfire Ammunition
  3. 02:22Visual Inspection and Serial Numbers
  4. 03:10Firing Pin Mechanics Explained
  5. 04:01Internal Action: Toggle-Lock
  6. 05:45Historical Context: Brazilian Contract

Frequently Asked Questions

What are the key differences between a rimfire and a centerfire Winchester 1866?

The primary difference lies in the ammunition. Original Winchester 1866 rifles used .44 Henry rimfire, featuring dual firing pins. Centerfire conversions modify the bolt and firing pin to a single central pin, allowing the use of more modern, reloadable centerfire cartridges.

How can you tell if a Winchester 1866 has been converted to centerfire?

Factory centerfire conversions typically start around serial number 140,000. However, many were converted by gunsmiths. Examining the bolt face for a threaded insert and the firing pin mechanism for a single central pin are key indicators.

What is the toggle-lock action on a Winchester 1866?

The toggle-lock action is the mechanism used in the Winchester 1866 and its predecessors. When the lever is operated, it breaks a 'knee joint' in the toggle links, retracting the bolt to cycle the action.

Why were firearms like the Winchester 1866 converted to centerfire?

The main driver for centerfire conversions was the increasing availability and advantages of centerfire ammunition, particularly its reloadability. This was crucial for users on the frontier who needed reliable and economical ammunition options.

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