.300 Rem. Ultra Mag

Reloading data for .300 Rem. Ultra Mag cartridges and specifications for cases and loads in this caliber.
Product number: CID_374
Load data for caliber ".300 Rem. Ultra Mag"
The .300 Rem. Ultra Magnum is an incredibly powerful shell, developed in 2005 for use by serious hunters and target shooters alike. This round combines the velocity and energy of a magnum rifle cartridge with superior accuracy potential - making it perfect for taking down larger game animals out to extended distances as well as precision shooting competitions.

Offering unrivaled accuracy potential from quality rifles equipped with optics, this rifle round is capable of efficiently killing even the largest game animals out to ranges that most other magnums are unable to reach - while retaining sufficient power to penetrate through thick hides and bone. Its dependable performance across temperatures and atmospheric conditions makes it ideal for shooters looking for consistent precision at extreme distances.

You find .300 Rem. Ultra 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 Rem. Ultra Mag
Cartridge Type: Rimless
Bullet Diameter: 0.308 '' | 7.82 mm
Primer Size: Large Rifle Magnum (LRM)
Max. Case Length (l3):2.85'' | 72.39 mm
Max .Cartridge Length / OAL:3.6'' | 91.39 mm
Maximum Standardized Pressure:64977.92 psi | 4480 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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