.357 Magnum

The .357 Magnum is an extremely popular round for revolvers that is also available for a select few semi-automatic pistols and several carbines. The round is a fairly powerful round for a handgun and revolvers chambered for the round are also capable of firing .38 Special. It was developed by gun expert Bill Jordan who worked with Smith and Wesson to improve the performance of their .38 Police Special round by lengthening the case .10" and strengthening the walls to withstand greater pressures.

Firearms Glossary Sources: Boston's Gun Bible, Tools for Survival, SAAMI.org.