The 7mm Remington Ultra Magnum or 7mm RUM is a 7mm rifle cartridge introduced by Remington Arms in 2001. The 7mm RUM was created using the .404 Jeffery case [citation needed] which was also used to develop the .375 RUM .300 RUM, and …

The 7mm RUM is based on the .300 Remington Ultra Magnum (1999) which is in turn based on a grossly modified version of the unbelted 404 Jeffery’s case. The RUM was designed to produce ultra high velocities to meet the growing demand for long range hunting rifles and cartridges.

2019年11月26日 · Let’s compare three cartridges that do that; the old 7mm Rem. Mag., the new .28 Nosler, and the over-the-top 7mm RUM. .284 bullets to fit the bores of all 7mm cartridges come in a wide variety of shapes and weights from 100 grains to 180 grains—adequate for everything from coyotes to big bears.

The 7mm Remington Ultra Mag is the smallest of the Ultra Mag calibers. It offers ballistics roughly comparable to the 7mm STW, but burns more powder to do so. Because of its great case capacity it is overbore with all but the very slowest rifle powders.

Remington Ultra Magnum, or RUM, refers to a "family" of cartridges developed between 1999 and 2002 by Remington Arms. [1] All of the RUM cartridges are based on the .404 Jeffery non-belted magnum cartridge.

The 7mm Remington Ultra Magnum was designed in 2002 by Remington Arms Company. The parent case is the .300 Remington Ultra Magnum and fits a .284 inch bullet on a .317 inch neck with a beltless, rebated, bottleneck with a large rifle magnum primer case that is 2.850 inches long and 3.60 inches in overall length with a 1:9 1/4 rifle twist.

With its high velocity and flat trajectory, the 7mm RUM offers superior energy retention, making it an excellent choice for hunting large, tough animals like elk, moose, and bear. Its powerful ballistics enable hunters to take precise shots at extended ranges, ensuring clean, ethical kills.

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2023年4月8日 · When comparing the 7mm RUM to the 7mm Rem Mag, several factors need to be considered. The 7mm RUM offers higher velocity and flatter trajectory, making it ideal for long-range hunting and precision shooting. The 7mm Rem Mag, on the other hand, is a versatile cartridge suitable for a wide range of game hunting and shooting applications.

In 2002, the 7mm RUM (short for 7mm Remington Ultra Mag) came out with the largest case than any other commercially available 7mm round. The 7mm Ultra Mag delivers hard-hitting long-range performance, perfect for hunting large North American big game like bears, elk, and moose.