What Is +P Ammo & Should You Use It?

Published on September 18, 2024
Duration: 11:32

This guide details how to understand and test +P ammunition, drawing on expert insights from Classic Firearms. It covers the definition of +P, SAAMI pressure standards, and the advantages for self-defense, including increased velocity and penetration. The guide also addresses the trade-off of increased recoil, especially in smaller firearms, and emphasizes the importance of firearm compatibility with higher pressure loads. Practical advice on live-fire testing and chronograph usage is provided.

Quick Summary

9mm +P ammunition is loaded to higher pressures (approx. 38,500 psi) than standard 9mm (approx. 35,000 psi) per SAAMI standards. It offers potential benefits like increased velocity and penetration for self-defense but comes with increased recoil, especially in subcompact firearms. Always confirm your firearm is rated for +P use.

Chapters

  1. 00:00Introduction to +P Ammunition
  2. 00:45Defining +P and SAAMI Standards
  3. 02:20Self-Defense Advantages
  4. 02:45Recoil and Subcompact Considerations
  5. 04:10The +P+ Warning
  6. 04:50Range Testing: Recoil Comparison
  7. 07:43Chronograph Velocity Results

Frequently Asked Questions

What is the difference between standard 9mm and 9mm +P ammunition?

9mm +P ammunition is loaded to higher pressures than standard 9mm. According to SAAMI guidelines, standard 9mm operates around 35,000 psi, while 9mm +P is rated for approximately 38,500 psi, representing about a 10% increase in pressure.

What are the advantages of using 9mm +P ammunition for self-defense?

+P ammunition can offer improved terminal ballistics, higher muzzle velocity, and deeper penetration compared to standard loads. This is particularly beneficial for hollow-point rounds, potentially increasing their effectiveness.

Does 9mm +P ammunition increase recoil?

Yes, the higher pressure in +P ammunition results in increased recoil. This is more noticeable in smaller, subcompact firearms and can affect shooting speed and accuracy for some individuals.

Is it safe to use 9mm +P ammunition in any 9mm firearm?

Not necessarily. While many modern firearms are designed to handle +P pressures, it's crucial to consult your firearm's manufacturer specifications. Using +P in a firearm not rated for it can cause damage or injury. +P+ ammunition is even less regulated and requires extreme caution.

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