Britain's aircraft-mounted .303 Browning machine gun with weapons expert Jonathan Ferguson

Published on April 20, 2022
Duration: 21:54

This video provides an expert-level overview of the Browning .303 aircraft machine gun, presented by Jonathan Ferguson of the Royal Armouries. It details the weapon's history, technical modifications for British service, and operational differences between fighter and bomber variants. The demonstration covers the unique double-cocking loading procedure and its eventual obsolescence.

Quick Summary

The Browning .303 aircraft machine gun, originally the Colt MG 40, underwent significant modifications for British service, including a conversion to an open-bolt system to manage heat from cordite propellant. Fighter versions used pneumatic activation, while bomber variants employed hydraulic systems. Its loading process involves a distinct double-cocking action.

Chapters

  1. 00:00Introduction and Identification
  2. 02:40History and British Adoption
  3. 03:45Technical Modifications for British Service
  4. 07:29Fighter vs. Bomber Variants
  5. 11:42Operational Demonstration
  6. 13:00Evolution of Aircraft Armament

Frequently Asked Questions

What modifications were made to the Browning .303 aircraft machine gun for British service?

The Browning .303 was converted from a closed-bolt to an open-bolt system. This modification, along with a specific rear sear release mechanism, was crucial to prevent 'cook-offs' caused by the higher burning temperature of British cordite propellant at its high rate of fire.

How did fighter and bomber versions of the Browning .303 aircraft machine gun differ in operation?

Fighter variants typically used pneumatic activation with two hoses for remote firing from the cockpit. Bomber versions, often mounted in turrets on aircraft like the Lancaster, generally employed hydraulic activation and included a 'hand fire and safe' unit on the side.

What is the unique loading procedure for the Browning .303 aircraft machine gun?

It requires a double-cocking process. The first pull extracts a round from the belt, and the second sets the bolt on the rear sear. The weapon then fires when the trigger mechanism releases the bolt.

Why was the .303 Browning aircraft machine gun eventually replaced?

While effective early in WWII, the .303 Browning was gradually supplemented and then replaced by more powerful armaments such as the 20mm Hispano cannon and later .50 caliber Browning machine guns, which offered greater destructive capability against evolving threats.

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