.338 Rem. Ultra Mag
Reloading data for .338 Rem. Ultra Mag cartridges and specifications for cases and loads in this caliber.
Product number: CID_459
Load data for caliber ".338 Rem. Ultra Mag"
The .338 Remington Ultra Magnum (RUM) is a rifle cartridge developed by Remington Arms in 2000. It was designed as a high-velocity, long-range cartridge that would offer the power and accuracy needed for hunting and long-range shooting.The cartridge is based on a modified .404 Jeffery case, which was necked down to accept .338 caliber bullets. The resulting cartridge has a bullet diameter of .338 inches and a case length of 2.825 inches.
The .338 RUM is capable of firing bullets weighing between 180 and 300 grains at muzzle velocities ranging from 2,900 to 3,200 feet per second. It is a powerful cartridge that is suitable for hunting a wide range of game animals, including elk, moose, and brown bear, at long ranges.
One of the main advantages of the .338 RUM is its long-range accuracy, which makes it popular among long-range shooters and hunters. It is also known for its flat trajectory, which makes it easier to shoot accurately over long distances.
You find .338 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: | .338 Rem. Ultra Mag |
|---|---|
| Cartridge Type: | Rimless |
| Bullet Diameter: | 0.338 '' | 8.59 mm |
| Primer Size: | Large Rifle Magnum (LRM) |
| Max. Case Length (l3): | 2.76'' | 70.1 mm |
| Max .Cartridge Length / OAL: | 3.6'' | 91.44 mm |
| Maximum Standardized Pressure: | 63817.6 psi | 4400 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.