.375 Remington Ultra Magnum [SEP] designer
.375 Remington Ultra Magnum
The .375 Remington Ultra Magnum, also known as the .375 RUM is a .375 rifle cartridge introduced by Remington Arms in 2000. The cartridge is intended for large and dangerous game. 
It is a beltless, rebated rim cartridge created by necking up the .300 Remington Ultra Magnum case to .375 caliber with no other changes. Factory loadings are less powerful than handloads for the cartridge. Remington factory loads push a 300 grain (19 g) bullet at 2760 ft/s (840 m/
- .475 Wildey Magnum
- .500 S&W Magnum
Rifle Cartridges.
- .17 Hornady Magnum Rimfire
- .22 Winchester Magnum Rimfire
- .300 Remington Ultra Magnum
- .338 Remington Ultra Magnum
- .375 Remington Ultra Magnum
- 7 mm Remington Ultra Magnum
- 7 mm Remington Magnum
- .270 Weatherby Magnum
- .340 Weatherby Magnum
- .378 Weatherby Magnum
- .460 Weatherby Magnum
- .300 Weatherby Magnum
- .244 H&H Magnum
- .300 H&H Magnum
- .375 H&H Magnum
- .264 Winchester