The most popular Python configuration — the 4-inch barrel offers ideal balance between portability and performance. Considered by many the finest production revolver ever made. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 6 Year introduced: 1955, USA Weight: 41.5 oz Overall length: 9.25" Status: Discontinued Intended use: Law Enforcement, Collecting, Target