Sten Gun in .455? (Q&A: British Small Arms of World War Two)

Published on January 24, 2025
Duration: 0:56

This entry analyzes the feasibility of a .455 Auto Sten Gun variant, concluding it was highly improbable due to the cartridge's unsuitability for reliable box magazine feeding in submachine guns. The analysis, drawing on historical context and technical firearm knowledge, highlights the .455 Auto's limitations and the British military's shift to other calibers.

Quick Summary

It's highly unlikely a Sten Gun would have been developed in .455 Auto. The cartridge's geometry is ill-suited for reliable box magazine feeding required by submachine guns. Furthermore, by WWII, the British military had largely moved to .38-200 for pistols, and experimental .455 Auto weapons like the Owen Gun proved unsuccessful.

Chapters

  1. 00:00Hypothetical .455 SMG Development
  2. 00:08.455 Auto for Box Magazines
  3. 00:20WWII British Pistol Calibers
  4. 00:40Owen Gun & 9mm Superiority

Frequently Asked Questions

Could a Sten Gun have been made in .455 Auto?

It's highly unlikely. The .455 Auto cartridge's geometry makes it very difficult to reliably feed from box magazines, a critical requirement for submachine guns. This technical limitation, combined with the British military's shift away from .455, made such a variant improbable.

Why was .455 Auto unsuitable for submachine guns?

The primary issue is the cartridge's rimmed design and overall shape, which hinders smooth and consistent feeding from high-capacity box magazines. This contrasts with rimless cartridges like 9mm Parabellum, which are far better suited for the mechanics of submachine guns.

What calibers did the British use in WWII pistols?

By World War II, the British military had largely transitioned from .455 Auto. Their standard service revolvers, such as those made by Webley and Enfield, were chambered in the .38-200 cartridge.

Was the Owen Gun ever chambered in .455 Auto?

Yes, an experimental version of the Owen Gun was indeed tried in .455 Auto. However, it was not successful, and the platform proved much more effective and reliable when chambered in the standard 9mm Parabellum.

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