The .300 Remington Ultra Magnum, also known as the .300 Ultra Mag, 7.62×72mm or .300 RUM is a 7.62 mm (.308 inch) rifle cartridge introduced by Remington Arms in 1999. The .300 Remington Ultra Magnum is one of the largest commercially available .30 caliber magnums currently being produced. It is a beltless, rebated rim cartridge, capable of handling all large North American game, as well as long-range shooting. Among commercially produced .30-caliber rifle chamberings, the .300 Remington Ultra Magnum is second only to the .30-378 Weatherby Magnum in cartridge-case capacity.

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    What is a Winchester Model 70 Supergrade 300 RUM Worth?

    I have a 2001 Winchester Model 70 300 Remington Ultra Mag made in the New Haven Connecticut plant. It has two boxes of Ammo down the tube and is in 98-99% condition. This was a special order from a distributor, to my knowledge only 400 were made. The last one that I saw sold on Gunbroker for...
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