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The Sporting Arms and Ammunition Manufacturers’ Institute, Inc., or SAAMI, recently announced the acceptance of a new caliber into its ranks. Joining the ever-growing list of industry standards is the 5.7 x 28 FN cartridge for centerfire pistols and revolvers.

Since 1926, SAAMI has been the clearinghouse for industry standards, providing much-needed safety and consistency across manufacturers. Since that time, SAAMI has accepted standards for ammunition cartridges and chamber requirements to ensure user safety. Additionally, the standards accepted by SAAMI help improve the reliability and interchangeability of firearms, ammunition, and the corresponding components.

The new 5.7 x 28 FN cartridge was proposed by SAAMI Voting Member Fiocchi of America in collaboration with FN American. Originally created by FN, the 5.7 x 28 FN round has seen growth in recent years in niche markets. The cartridge in question has a 40-grain projectile and a velocity of 1,750 fps when fired from a 5-inch test barrel. Its maximum Average Pressure, or MAP, is 48,500 psi.

More information and technical drawings of the cartridge can be found on SAAMI’s website, along with other cartridge technical drawings.