.450 Marlin

Reloading data for .450 Marlin cartridges and specifications for cases and loads in this caliber.
Product number: CID_763
Load data for caliber ".450 Marlin"
The .450 Marlin is a centerfire rifle cartridge developed by Marlin Firearms in the late 1990s. It was designed to provide a powerful and accurate cartridge for hunting big game at relatively short to medium ranges.

The .450 Marlin cartridge has a bullet diameter of .458 inches (11.6 mm) and a case length of 2.55 inches (65 mm). It is typically loaded with bullets weighing between 250 and 500 grains (16.2 to 32.4 g), and has a typical muzzle velocity of around 1,800 to 2,300 feet per second (550 to 700 m/s) and a muzzle energy of around 2,600 to 3,500 foot-pounds (3,500 to 4,700 J).

The .450 Marlin cartridge is primarily used for hunting, particularly for larger game such as elk, moose, and bear. It is also used for tactical and law enforcement applications, as well as some competitive shooting events. The cartridge is well-suited for use in lever-action rifles, and has gained some popularity among hunters and shooters who appreciate the classic lever-action design.

Overall, the .450 Marlin is a powerful and versatile cartridge that is well-suited for hunting and other applications where a high level of stopping power is desired. It has gained a following among hunters and shooters who appreciate its accuracy, versatility, and compatibility with lever-action rifles.


You find .450 Marlin with all common powders and bullets by clicking the 'Loads in this caliber' button above.

Technical Specifications (based on the respective safety standard - see more details in tab 'Datasheet' if available)

Caliber: .450 Marlin
Cartridge Type: Magnum
Bullet Diameter: 0.458 '' | 11.63 mm
Max. Case Length (l3): 2.08'' | 52.83 mm
Max .Cartridge Length / OAL: 2.55'' | 64.77 mm
Maximum Standardized Pressure: 47863.2 psi | 3300 bar
C.I.P.
The Commission internationale permanente pour l'épreuve des armes à feu portatives ("Permanent International Commission for the Proof of Small Arms" – commonly abbreviated as C.I.P.) is an international organisation which sets standards for safety testing of firearms. (The word portatives ("portable") in the name refers to the fact the C.I.P. tests small arms almost exclusively; it is ordinarily omitted from the English translation of the name.) As of 2015, its members are the national governments of 14 countries, of which 11 are European Union member states. The C.I.P. safeguards that all firearms and ammunition sold to civilian purchasers in member states are safe for the users.
To achieve this, all such firearms are first proof tested at C.I.P. accredited Proof Houses. The same applies for cartridges; at regular intervals, cartridges are tested against the C.I.P. pressure specifications at the ammunition manufacturing plants and at C.I.P. accredited Proof Houses.
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