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7mm Remington Ultra Mag Ammo At Lowest Price

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7mm Rem Ultra Magnum
150 Gr
20 Rds

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Updated: 13m ago

7mm Rum Ammo

7mm Rum Ammo For Sale- Top Ammo Vendors Available

The 7mm RUM was created using the .404 Jeffery case, which was also used to develop the .375 RUM .300 RUM and .338 RUM. By necking down the .300 RUM to suit the .284 or 7mm projectile, Remington produced a non-belted case with a head diameter that is somewhat larger than the belt diameter of original belted numbers.

The resulting case has significantly more capacity than any conventional belted magnum. Compared to the 7mm Remington Magnum, top 7mm RUM loads deliver 25% more energy at 300 yards. Such performance demands a price, and in this case, that is a large muzzle blast, sharp recoil, and short barrel life.

About: 7mm RUM

  • Type: Rifle
  • Place of origin: United States
  • Designer: Remington
  • Designed: 2002


  • Parent case: .300 Remington Ultra Magnum
  • Case type: Beltless, rebated, bottleneck
  • Bullet diameter: .284 in (7.2 mm)
  • Neck diameter: .317 in (8.1 mm)
  • Shoulder diameter: .5250 in (13.34 mm)
  • Base diameter: .5500 in (13.97 mm)
  • Rim diameter: .532 in (13.5 mm)
  • Case length: 2.850 capacity 108.1 gr.
  • Overall length: 3.600 in (91.4 mm)
  • Rifling twist: 1-9 1/4"
  • Primer type: Large rifle magnum

Ballistic performance

Bullet mass/type Velocity Energy
140 gr (9 g) PSP Bonded 3,425 ft/s (1,044 m/s) 3,646 ft⋅lbf (4,943 J)
150 gr (10 g) PSP Bonded 3,325 ft/s (1,013 m/s) 3,682 ft⋅lbf (4,992 J)
175 gr (11 g) PSP A-Frame ,025 ft/s (922 m/s) 3,555 ft⋅lbf (4,820 J)

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