What is smith and wesson 40?

The Smith and Wesson .40 is a popular semi-automatic pistol cartridge first introduced in 1990. It was designed as a law enforcement cartridge, but has also gained popularity with civilian shooters for its stopping power and accuracy. The .40 cartridge has a nominal diameter of .400 inches, and typically uses bullets weighing between 155 and 180 grains. It is often compared to the 9mm and .45 ACP cartridges, with some shooters claiming it offers the best of both worlds in terms of power and recoil control. Smith and Wesson make several models of pistols chambered in .40, including the M&P and the SDVE. The .40 cartridge has been used by many law enforcement agencies in the United States, including the FBI, and is also popular with civilian concealed carry permit holders.