The Colt Python is a .357 Magnum

.357 Magnum

The .357 S&W Magnum , or simply .357 Magnum, is a revolver cartridge created by Elmer Keith, Phillip B. Sharpe, Colonel D. B. Wesson of firearms manufacturer Smith & Wesson, and Winchester. It is based upon Smith & Wesson's earlier .38 Special cartridge. The .357 Magnum cartridge was introduced in...

 caliber revolver

Revolver

A revolver is a repeating firearm that has a cylinder containing multiple chambers and at least one barrel for firing. The first revolver ever made was built by Elisha Collier in 1818. The percussion cap revolver was invented by Samuel Colt in 1836. This weapon became known as the Colt Paterson...

 formerly manufactured by Colt's Manufacturing Company

Colt's Manufacturing Company

Colt's Manufacturing Company is a United States firearms manufacturer, whose first predecessor corporation was founded in 1836 by Sam Colt. Colt is best known for the engineering, production, and marketing of firearms over the later half of the 19th and the 20th century...

 of Hartford

Hartford, Connecticut

Hartford is the capital of the U.S. state of Connecticut. The seat of Hartford County until Connecticut disbanded county government in 1960, it is the second most populous city on New England's largest river, the Connecticut River. As of the 2010 Census, Hartford's population was 124,775, making...

, Connecticut

Connecticut

Connecticut is a state in the New England region of the northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, and the state of New York to the west and the south .Connecticut is named for the Connecticut River, the major U.S. river that approximately...

. It is sometimes referred to as a "Combat Magnum". It was first introduced in 1955, the same year as Smith & Wesson's M29

S&W Model 29

The Smith & Wesson Model 29 is a six-shot, double-action revolver chambered for the .44 Magnum cartridge and manufactured by the U.S. company Smith & Wesson...

 .44 Magnum. The now discontinued Colt Python targeted the premium revolver

Revolver

A revolver is a repeating firearm that has a cylinder containing multiple chambers and at least one barrel for firing. The first revolver ever made was built by Elisha Collier in 1818. The percussion cap revolver was invented by Samuel Colt in 1836. This weapon became known as the Colt Paterson...

 market segment. Some firearm collectors and writers such as Jeff Cooper, Ian V. Hogg

Ian V. Hogg

Ian V. Hogg was a notable British author of books on firearms, artillery, ammunition, and fortification, as well as biographies of several famous general officers. During his career he wrote, co-wrote, edited, or co-edited about 150 books and sold well over 1 million copies .-Biographical...

, Chuck Hawks, Leroy Thompson, Renee Smeets and Martin Dougherty have described the Python as the finest production revolver ever made..
The Colt Python is a double action handgun chambered for the powerful .357 Magnum

.357 Magnum

The .357 S&W Magnum , or simply .357 Magnum, is a revolver cartridge created by Elmer Keith, Phillip B. Sharpe, Colonel D. B. Wesson of firearms manufacturer Smith & Wesson, and Winchester. It is based upon Smith & Wesson's earlier .38 Special cartridge. The .357 Magnum cartridge was introduced in...

 cartridge built on Colt's large I-frame.