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.240 WBY MAG Ammo For Sale- Top Ammo Vendors Available

.240 Weatherby Mag. is a proprietary cartridge used only in Weatherby rifles. This particular Weatherby case is unique: other than shape, it isn't physically based on other Weatherby cases, having the same rim diameter and a similar length to the .30-06.

.240 Weatherby Magnum was once the fastest commercially produced 6 mm cartridge. There were several faster wildcat rounds available, but .240 Wby. Mag. outclassed the 6 mm Remington and the newer .243 WSSM by about 150 ft/s. However, the lightweight.

.240 Weatherby Magnum was developed in 1968 by Roy Weatherby.

Whether you need .240 WBY MAG Ammo in bulk, box, or case quantity, we have it all from various ammo retailers in one place.

About: .22 Long Ammo

  • Type: Rifle
  • Place of origin: USA
  • Production: History
  • Designer: Roy Weatherby
  • Designed: 1968
  • Manufacturer: Weatherby


  • Bullet diameter: .243 in (6.2 mm)
  • Neck diameter: .272 in (6.9 mm)
  • Shoulder diameter: .429 in (10.9 mm)
  • Base diameter: .453 in (11.5 mm)
  • Rim diameter : .472 in (12.0 mm)
  • Case length: 2.496 in (63.4 mm)
  • Overall length: 3.100 in (78.7 mm)
  • Case capacity: 64 gr H2O (4.1 cm3)
  • Rifling twist: 1 in 10 in (250 mm)
  • Primer type: Large rifle
  • Maximum pressure: 65,000 psi (450 MPa)

Ballistic performance

Bullet mass/type Velocity Energy
60 gr (4 g) HP 3,817 ft/s (1,163 m/s) 1,942 ft⋅lbf (2,633 J)
75 gr (5 g) HP 3,555 ft/s (1,084 m/s) 2,105 ft⋅lbf (2,854 J)
80 gr (5 g) SP 3,514 ft/s (1,071 m/s) 2,194 ft⋅lbf (2,975 J)
90 gr (6 g) SP 3,394 ft/s (1,034 m/s) 2,303 ft⋅lbf (3,122 J)
100 gr (6 g) HP 3,202 ft/s (976 m/s) 2,277 ft⋅lbf (3,087 J)

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