.303 Sporting

Reloading data for .303 Sporting cartridges and specifications for cases and loads in this caliber.
Product number: CID_392
Load data for caliber ".303 Sporting"
The .303 Sporting was a popular sporting round developed in the late 19th century by British firearms manufacturer Holland & Holland. This cartridge was designed to offer light recoil and excellent accuracy potential, making it an extremely versatile choice for many types of hunting applications.

The .303 Sporting is well-known for its superior knockdown power, allowing hunters to take down medium-sized game animals at extended ranges with lethal accuracy. Additionally, this caliber has earned a great deal of respect among target shooters due to its reliable construction and consistent performance in most weather conditions.

You find .303 Sporting 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: .303 Sporting
Cartridge Type: Rimmed
Bullet Diameter: 0.314 '' | 7.98 mm
Primer Size: Large Rifle (LR)
Max. Case Length (l3):2.08'' | 52.83 mm
Max .Cartridge Length / OAL:2.93'' | 74.5 mm
Maximum Standardized Pressure:47863.2 psi | 3300 bar
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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