April 13, 2026

SAAMI Releases Update of Rimfire Ammunition Standard

SHELTON, Conn. — The Sporting Arms and Ammunition Manufacturers’ Institute^®, Inc., (SAAMI^®) is pleased to announce the release of the 2026 update to American National Standard SAAMI Z299.1-2026, Voluntary Industry Performance Standards for Pressure and Velocity of Rimfire Ammunition for the Use of Commercial Manufacturers.

SAAMI is an accredited standards developer recognized by the American National Standards Institute (ANSI).

The 2026 American National Standard SAAMI Z299.1-2026 update provides pressure and velocity performance and dimensional characteristics for rimfire sporting ammunition and rimfire chambers. Included are procedures and equipment for determining these criteria.

The publication of these standards is a primary part of SAAMI’s mission to establish and maintain standards to ensure safety, reliability and interchangeability of firearms, ammunition and suppressors.

SAAMI American National Standards are periodically updated to ensure they remain current with developments in the industry and to capture new cartridge designs introduced by its member companies.

Following development by SAAMI member companies, the standard is reviewed by an independent consensus body consisting of manufacturers, government agencies, testing laboratories, users and outside experts.

The 2026 standard update, along with five additional firearm, ammunition and suppressor standards published by SAAMI, are available without charge to the public on SAAMI’s website here https://saami.org/technical-information/ansi-saami-standards/.



About SAAMI

The Sporting Arms and Ammunition Manufacturers’ Institute, founded in 1926 at the request of the federal government, is dedicated to creating and promulgating technical, performance and safety standards for firearms, ammunition, suppressors, and components, and is committed to being the preeminent global resource for the safe and responsible design, manufacture, transportation, storage and use of these products.

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