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Developed in the late 1990s, the .357 SIG cartridge was the result of a collaboration between Sig Sauer and Federal Ammunition.
It was specifically engineered to replicate the ballistic performance of the powerful .357 Magnum round in a semi-automatic pistol platform.
This innovative design combined the .357 Magnum’s flat trajectory and high velocity with the convenience and capacity of a semi-automatic pistol, making it a favorite among law enforcement agencies and civilian shooters.