Have you ever wondered why you can use ammunition from any manufacturer in any firearm, so long as they are the same caliber? The answer is that the industry has standards that are established and managed by the Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI). The core of its mission is to ensure that a cartridge is the right size, shape and composition to fit into, and safely fire from, a firearm’s chamber that is the right size, shape and composition.

The...