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458 Win Mag Ammo

458 Win Mag Ammo For Sale - Best Collection With Top Venders

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.458 Winchester Magnum

  • Type Rifle / Hunting
  • Place of origin USA
  • Production history
  • Designer Winchester
  • Designed 1956

Specifications

  • Parent case .375 H&H Magnum
  • Case type Belted, tapered
  • Bullet diameter .458 in (11.63 mm)[1]
  • Neck diameter .481 in (12.2 mm)
  • Base diameter .513 in (13.0 mm)
  • Rim diameter .532 in (13.5 mm)
  • Rim thickness .220 in (5.6 mm)
  • Case length 2.500 in (63.5 mm)
  • Overall length 3.340 in (84.8 mm)
  • Rifling twist 1-14"
  • Primer type Large rifle magnum

Ballistic performance

Bullet mass/type Velocity Energy
300 gr (19 g) HP 2,606 ft/s (794 m/s) 4,525 ft⋅lbf (6,135 J)
350 gr (23 g) RN 2,557 ft/s (779 m/s) 5,083 ft⋅lbf (6,892 J)
400 gr (26 g) FN 2,468 ft/s (752 m/s) 5,411 ft⋅lbf (7,336 J)
500 gr (32 g) RN 2,192 ft/s (668 m/s) 5,336 ft⋅lbf (7,235 J)

Please browse our list of 458 Win Mag Ammunition today! Visit your favorite ammo retailer, compare price & choose the product you are looking for.

The .458 Winchester Magnum is a belted, straight-taper cased dangerous game rifle cartridge. It was introduced commercially in 1956 by Winchester and first chambered in the Winchester Model 70 African rifle. It designed to compete against the .450 Nitro Express and the .470 Nitro Express cartridges used in big bore British double rifles.

The .458 Winchester Magnum was designed for hunting dangerous game animals by emulating the performance of powerful English double rifle cartridges in a bolt-action rifle.

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