Find top-quality 357 Sig ammunition for sale at The Armory. Choose from a wide selection of high-performing rounds, perfect for personal protection or target shooting. Shop now and experience the power and accuracy of 357 Sig ammo
The .357 SIG round was developed in the 1990s as a collaborative effort between SIG Sauer and Federal Cartridge. The goal was to create a round that would mimic the performance of the popular .357 Magnum revolver cartridge, but in a semi-automatic pistol. The .357 SIG was designed to be a high-velocity round that could deliver consistent accuracy and performance in a compact, semi-automatic pistol. The round quickly gained popularity among law enforcement and military organizations for its ability to penetrate body armor, and has since been adopted by many for personal defense and competition shooting.