.357 SIG Ammo

.357 SIG ammo, also known as 357 Sig or 9×22mm, is a bottlenecked rimless centerfire handgun cartridge co-developed by SIG Sauer and Federal Premium. Originating from a necked-down 10mm Auto cartridge casing, it was the first modern bottleneck commercial pistol cartridge since the early 1960s, predating specialized rounds like the 9×25mm Dillon. Shop SIG 357 for stopping power, heavy muzzle energy, and high velocity.