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

Published on March 3, 2020
Duration: 2:18

The 10mm Auto, developed by Jeff Cooper, features a longer case (0.992") and uses a large pistol primer, offering higher velocity (1300 fps with 180gr) and more recoil. The .40 S&W, from Smith & Wesson, has a shorter case (0.850"), uses a small pistol primer, and achieves lower velocity (1130 fps with 165gr). Both are suitable for defense and law enforcement, with 10mm also favored for hunting.

Quick Summary

The 10mm Auto features a longer case (0.992") and larger primer, achieving higher velocities (approx. 1300 fps) and more recoil, making it suitable for defense and hunting. The .40 S&W has a shorter case (0.850") and smaller primer, with lower velocity (approx. 1130 fps) and less recoil, primarily for defense and law enforcement.

Chapters

  1. 00:00Introduction: 10mm vs .40 S&W History
  2. 00:27Physical Differences: Case Length & Primer
  3. 00:59Performance: Velocity, Power & Use Cases
  4. 01:48Recoil and Choosing the Right Caliber

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") compared to the .40 S&W (0.850"). While bullet diameters are the same, 10mm typically uses a large pistol primer, while .40 S&W uses a small pistol primer.

How do the performance metrics like velocity and recoil compare between 10mm Auto and .40 S&W?

10mm Auto generally offers higher velocity, around 1300 fps with a 180gr bullet, leading to more felt recoil. The .40 S&W typically achieves around 1130 fps with a 165gr bullet, resulting in less recoil.

What are the primary intended uses for 10mm Auto and .40 S&W?

Both calibers are designed for personal defense, law enforcement, and military applications. The 10mm Auto is also frequently chosen as a hunting round, particularly for larger game like hogs.

Who developed the 10mm Auto and the .40 S&W cartridges?

The 10mm Auto was developed by Colonel Jeff Cooper in the early 1980s. The .40 S&W was subsequently developed by Smith & Wesson in the early 1990s.

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