Aren't 10mm & .40 S&W the Same?

Published on December 27, 2024
Duration: 0:57

This video from GUNBROS provides an expert comparison between the 10mm Auto and .40 S&W cartridges. The speaker, demonstrating high authority, explains the historical development of both calibers, noting the .40 S&W as a derivative of the 10mm created for the FBI due to recoil concerns. Key differences in case length, velocity, and muzzle energy are detailed, with the 10mm offering significantly higher performance. The current market trends and niche roles of each caliber are also discussed.

Quick Summary

The 10mm Auto and .40 S&W differ significantly in power and design. Developed from the 10mm, the .40 S&W offers reduced recoil and velocity (approx. 1000 fps, 400 ft-lbs) favored by law enforcement, whereas the 10mm provides higher performance (approx. 1200 fps, 600 ft-lbs) for niche applications.

Chapters

  1. 00:00Introduction to 10mm and .40 S&W
  2. 00:07Historical Context
  3. 00:15The FBI Connection
  4. 00:29Market Popularity
  5. 00:39Ballistic Performance Comparison

Frequently Asked Questions

What is the main difference between 10mm Auto and .40 S&W?

The primary difference lies in power and case size. The 10mm Auto is a larger, more powerful cartridge with higher velocity and muzzle energy, while the .40 S&W is a derivative designed for reduced recoil, making it a less powerful option suitable for law enforcement.

Why was the .40 S&W developed?

The .40 S&W was developed in the early 1990s by Smith & Wesson, partly in response to the FBI's experience with the 10mm Auto. The FBI found the 10mm's recoil excessive for widespread duty use, leading to the creation of the .40 S&W as a compromise with lower recoil and velocity.

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

The 10mm Auto typically fires a projectile at around 1,200 fps with 600 ft-lbs of energy. In contrast, the .40 S&W typically achieves about 1,000 fps with 400 ft-lbs of energy, demonstrating the 10mm's superior power output.

Is the .40 S&W still popular?

While historically popular, the .40 S&W has seen a decline in market popularity, especially among law enforcement agencies and civilian shooters. Many are transitioning back to 9mm, particularly with advancements in 9mm hollow-point ammunition technology.

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