Quick Tip: 10mm Auto vs .40 S&W - What's the Difference?

Published on March 3, 2020
Duration: 2:18

This video from Brownells provides a technical comparison between the 10mm Auto and .40 S&W cartridges. It details their historical development, physical dimensions, primer types, and performance characteristics, including velocity and recoil. The expert assessment highlights the detailed knowledge and practical data presented, making it a valuable resource for understanding these popular handgun calibers.

Quick Summary

Brownells experts compare the 10mm Auto and .40 S&W, detailing their historical development, physical dimensions (case length, primer type), and ballistic performance (velocity, recoil). The 10mm Auto offers more power, while the .40 S&W provides more manageable recoil.

Chapters

  1. 00:00Introduction and History
  2. 00:27Physical Dimensions
  3. 00:59Intended Use and Performance
  4. 01:48Recoil and Conclusion

Frequently Asked Questions

What are the main physical differences between 10mm Auto and .40 S&W cartridges?

The 10mm Auto has a longer case length (0.992 inches) than the .40 S&W (0.850 inches). While bullet and case diameters are similar, the 10mm typically uses a large pistol primer, whereas the .40 S&W commonly uses a small pistol primer.

How do the ballistic performances of 10mm Auto and .40 S&W compare?

Using Federal ammunition as an example, the 10mm Auto pushes a 180gr projectile at approximately 1300 fps. The .40 S&W typically pushes a 165gr projectile at around 1130 fps, resulting in less power but also less recoil.

What are the historical origins of the 10mm Auto and .40 S&W cartridges?

The 10mm Auto was developed in the early 1980s by Colonel Jeff Cooper. The .40 S&W was developed by Smith & Wesson in the early 1990s, partly in response to law enforcement needs.

Which caliber is better for self-defense, 10mm Auto or .40 S&W?

Both calibers are effective for self-defense. The 10mm Auto offers greater power and potential stopping power, but with increased recoil. The .40 S&W provides a balance of effectiveness and more manageable recoil, making it a popular choice for law enforcement and civilian defense.

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