From Wikipedia, the free encyclopedia:
"The 7mm Remington Ultra Magnum is a 7mm rifle cartridge introduced by Remington Arms in 2002. It is a beltless, rebated rim cartridge created by necking down the .300 Remington Ultra Magnum case to 7mm (.284 caliber) with no other changes. The 7mm Remington Ultra Magnum is currently the largest commercially available cartridge in 7mm (.284 caliber).
The 7mm RUM is an adequate cartridge for any big game species in North America which includs Elk, Moose and Brown Bear. The 7mm RUM is also adequate for large, thin-skinned African game."
7 mm Remington Ultra Magnum. (2008, December 10). In Wikipedia, The Free Encyclopedia. Retrieved 22:36, March 20, 2009, from http://en.wikipedia.org/w/index.php?title=7_mm_Remington_Ultra_Magnum&oldid=256947399