.375 Weatherby Magnum

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.375 Weatherby Magnum
Type Rifle
Place of origin USA
Production history
Designer Roy Weatherby
Designed 1944-1945
Manufacturer Norma/Weatherby
Specifications
Bullet diameter .375 in (9.5 mm)
Neck diameter .398 in (10.1 mm)
Shoulder diameter .490 in (12.4 mm)
Base diameter .511 in (13.0 mm)
Rim diameter .530 in (13.5 mm)
Rim thickness .050 in (1.3 mm)
Case length 2.855 in (72.5 mm)
Overall length 3.69 in (94 mm)
Rifling twist 1 in 12
Primer type Large rifle
Ballistic performance
Bullet weight/type Velocity Energy
270 gr (17 g) 2,940 ft/s (900 m/s) 5,181 ft·lbf (7,024 J)
300 gr (19 g) 2,800 ft/s (850 m/s) 5,223 ft·lbf (7,081 J)
235 gr (15.2 g) 3,135 ft/s (956 m/s) 5,125 ft·lbf (6,949 J)
Test barrel length: 20
Source: Barnes & Amber

The .375 Weatherby Magnum was an American rifle cartridge.

Designed in 1944-45 by Roy Weatherby, the .375 WM was a blown-out, improved round based on the .375 H&H. While similar to the wildcat .375 Ackley Improved Magnum, it was factory available. It is more potent than strictly necessary for North American big game, and is suitable for safari in Africa, except possibly elephant.[1] The trajectory with the 270 grain factory load (with a midrange trajectory of 1.9 inches at 200 yards {4.8 cm at 180 m}) approximates the .30-06[2] and is fine for long ranges in North America.

The .375 Weatherby was only ever offered in Weatherby rifles, and is no longer offered by Weatherby. It is still commercially available, and can be handloaded to approximate factory ballistics,[3] or with a lighter 235 grain slug.[4]

[edit] See also

[edit] References

  1. ^ Barnes, Frank C., ed. by John T. Amber. Cartridges of the World (Northfield, IL: DBI Books, 1972), p.52.
  2. ^ Barnes, p.57.
  3. ^ Barnes, p.57.
  4. ^ Barnes, p.57.

[edit] Sources

  • Barnes, Frank C., ed. by John T. Amber. Cartridges of the World. Northfield, IL: DBI Books, 1972.