9mm vs. .38spl+p for Self-Defense!?!..Do Ballistics Matter in Handguns?

Published on March 23, 2026
Duration: 8:21

This video from The Yankee Marshal delves into the practical ballistics of 9mm versus .38 Special +P for self-defense. While acknowledging that terminal ballistics can matter in critical incidents, the instructor emphasizes that bullet placement is paramount. Ultimately, the significant capacity advantage of 9mm semi-automatic pistols makes them the preferred choice for most self-defense scenarios when comparing against revolvers chambered in .38 Special +P, given their comparable energy levels at the higher end of performance.

Quick Summary

For self-defense, while ballistics matter, accurate shot placement is paramount. 9mm Luger and .38 Special +P can have comparable energy levels, with high-end 9mm reaching ~465 ft-lbs and hot .38 Spl+P reaching ~485 ft-lbs. However, 9mm semi-autos offer a significant capacity advantage (16-31 rounds) over .38 Spl+P revolvers (5-8 rounds), making 9mm the preferred choice.

Chapters

  1. 00:009mm vs. .38 Special +P Comparison
  2. 00:31.38 Special +P vs. .357 Magnum Ballistics
  3. 01:55Why Ballistics Matter in Self-Defense
  4. 03:10Comparative Energy Levels: 9mm vs. .38 Spl+P
  5. 05:09The Deciding Factor: Capacity Advantage

Frequently Asked Questions

Does bullet placement matter more than ballistics in a self-defense handgun scenario?

Yes, accurate shot placement is paramount in self-defense. While terminal ballistics can enhance effectiveness if both parties connect, hitting the intended target reliably is the primary objective for neutralizing a threat.

How do 9mm and .38 Special +P compare in terms of energy for self-defense?

Low-end 9mm typically produces around 300 ft-lbs of energy. Hot .38 Special +P can reach up to 485 ft-lbs, but high-end 9mm loads are very comparable, reaching about 465 ft-lbs.

What is the main advantage of 9mm over .38 Special +P for self-defense?

The primary advantage of 9mm for self-defense is its significantly higher ammunition capacity. 9mm semi-automatics commonly hold 16-31 rounds, while .38 Special +P revolvers typically hold only 5-8 rounds.

Can .38 Special +P perform as well as .357 Magnum?

High-performance, off-the-shelf .38 Special +P self-defense ammunition can achieve ballistic performance that overlaps with lower-end .357 Magnum self-defense loads.

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