The .357 SIG pistol cartridge (designated as the 357 Sig by the SAAMI and 357 SIG by the C.I.P.) is the product of Swiss-German firearms manufacturer SIG Sauer, in cooperation with the American ammunition manufacturer Federal Cartridge. While it is based on a .40 S&W case necked down to accept 0.355-inch (9.0 mm) bullets, the .357 SIG brass is slightly longer by 0.009 in (0.23 mm) to 0.020 in (0.51 mm) total. The cartridge is used by a number of law enforcement agencies (LEA) and has a good reputation for both accuracy and stopping power.
X-Treme Bullets features copper plating applied electrochemically to a precision swaged lead core. The base of the bullet is also fully coated in copper. X-Treme Bullets are proudly made out of the finest materials available in the United States in order to ensure performance delivered down range with each and every shot. Our process starts with a lead billet that is extruded into wire. The lead wire is then swaged into a core. The cores are copper plated, then re-struck once more. Though not common in the industry, this restrike process produces a bullet that is more uniform, with a more precise diameter and a smoother finish for a better shooting and a better looking bullet. X-Treme Bullets Copper Plated projectiles are re-struck to ensure our diameters are precise and consistent from bullet to bullet and lot to lot.
- Activity: General Purpose
- Caliber: 357 Sig
- Bullet Profile: Flat Point
- Casing Type: Re-manufactured Brass
- Manufacturer: Freedom Munitions