Load data for caliber ".375 Rem. Ultra Mag"The 375 Remington Ultra Magnum (375 RUM) is a high-powered rifle cartridge developed by Remington Arms Company. It was introduced in 2002 and is based on a necked-down and blown-out version of the 404 Jeffery case.
The cartridge features a bullet diameter of .375 inches (9.5 mm) and a case length of 2.850 inches (72.4 mm). It is designed to provide hunters and long-range shooters with a flat trajectory, high muzzle velocity, and excellent long-range accuracy.
The 375 RUM is capable of firing heavy, high-BC bullets at extremely high velocities, making it well-suited for long-range shooting and hunting large game such as elk, moose, and brown bear. However, the cartridge produces significant recoil, which can make it challenging to shoot for some shooters. It requires a rifle with a strong action and a heavy barrel to handle the high pressures generated by the cartridge.
You find .375 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:||.375 Rem. Ultra Mag|
|Bullet Diameter:||0.375 '' | 9.53 mm|
|Primer Size:||Large Rifle Magnum (LRM)|
|Max. Case Length (l3):||2.85'' | 72.39 mm|
|Max .Cartridge Length / OAL:||3.6'' | 91.44 mm|
|Maximum Standardized Pressure:||63817.6 psi | 4400 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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