.300 Win. Mag.
Reloading data for .300 Win. Mag. cartridges and specifications for cases and loads in this caliber.
Product number: CID_380
Load data for caliber ".300 Win. Mag."
The .300 Winchester Magnum (Win. Mag) is a powerful and versatile cartridge developed in the early 1960s. This round is known for its impressive velocity, excellent accuracy potential, and flat trajectories - making it one of the most popular rounds for marketing game animals from long distances.The .300 Win. Mag is also an ethical choice for hunters due to its ability to take down large game humanely, even at extended ranges. Additionally, this caliber increasingly popular among target shooters due to its superior performance in all weather conditions and reliable precision accuracy.
You find .300 Win. Mag. 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: | .300 Win. Mag. |
|---|---|
| Cartridge Type: | Magnum |
| Bullet Diameter: | 0.308 '' | 7.82 mm |
| Primer Size: | Large Rifle Magnum (LRM) |
| Max. Case Length (l3): | 2.62'' | 66.55 mm |
| Max .Cartridge Length / OAL: | 3.34'' | 84.84 mm |
| Maximum Standardized Pressure: | 62367.2 psi | 4300 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.