The .40 S&W (1022mm Smith & Wesson) is a rimless pistol cartridge developed jointly by major American firearms manufacturers Smith & Wesson and Winchester. The .40 S&W was developed from the ground up as a law enforcement cartridge designed to duplicate performance of the Federal Bureau of Investigation’s reduced-velocity 10mm Auto cartridge which could be retrofitted into medium-frame (9mm size) automatic handguns. It uses .40 inch (10.16mm) diameter bullets ranging in weight from 105 to 200 grains (6.8039 g to 13 g).
Red Vipers are a cast lead projectile using certified factory alloy containing 92% lead, 6% animony and 2% tin.
After this projectile is swaged to correct diameter and profile, it then goes through a 3 step process of encapsulating the projectile with a non-toxic polymer based HI-TEK supercoat. This process eliminates smoke and leading associated with the traditional lead cast bullets.
This cost effective 40 S&W round is loaded with a brass casing, Winchester primer and powder along with a 180 gr Red Viper projectile. This round is loaded to SAAMI specs along with integrity and attention to detail to ensure reliability and outstanding performance.