Is there a standard for +P ammo?

Published on March 6, 2026
Duration: 0:55

This video from TheYankeeMarshal, featuring Pete Garr, addresses the user's question about standards for +P and +P+ ammunition. While +P has defined standards, +P+ does not, creating potential dangers. The speaker, exhibiting experienced authority, highlights the risks of exceeding pressure limits and points to handloaders as a source for detailed pressure data.

Quick Summary

+P ammunition adheres to defined pressure standards, ensuring predictable performance. However, +P+ ammunition lacks a maximum industry standard, posing a significant risk of catastrophic firearm failure if used in guns not rated for extreme pressures. For detailed pressure data beyond standard +P, consult experienced handloaders.

Chapters

  1. 00:00Intro: +P Ammo Standards Question
  2. 00:26+P and +P+ Standards Explained
  3. 00:47Handloaders as Pressure Experts

Frequently Asked Questions

What is the difference between +P and +P+ ammunition regarding standards?

+P ammunition is manufactured to meet specific, defined pressure standards set by organizations like SAAMI. In contrast, +P+ ammunition does not have a maximum industry standard, meaning its pressure levels can vary significantly and potentially be dangerously high.

What are the risks associated with using +P+ ammunition?

The primary risk with +P+ ammunition is its lack of a defined maximum pressure standard. Using it in firearms not specifically designed to withstand such extreme pressures can lead to catastrophic failure, commonly referred to as 'blowing up your gun'.

Where can I find reliable pressure data for ammunition?

While industry standards exist for +P loads, detailed technical pressure data, especially for non-standardized loads like +P+, is often best obtained from experienced handloaders or specialized ballistics resources. They possess in-depth knowledge of specific pressure curves.

Does SAAMI set standards for +P+ ammunition?

No, SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) sets standards for +P ammunition, ensuring a level of predictability and safety. However, there is no equivalent maximum standard established by SAAMI or other major bodies for +P+ ammunition.

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