.375 Whelen

The .375 Whelen cartridge (A.K.A. 375-06) was developed in 1951 by L.R. "Bob" Wallack and named in honor of Colonel Townsend Whelen. It is a .30-06 Springfield case necked up to .375. While the .375 Whelen retains the .30-06's shoulder angle of 17° 30′, an improved version was introduced with a 40°  angle, providing more case capacity as well as better headspacing. The .375 Whelen Improved is favored by most who use this caliber.

.375 Whelen
TypeRifle
Place of originUnited States
Production history
DesignerL.R. "Bob" Wallack
Designed1951
Specifications
Parent case.30-06 Springfield
Ballistic performance
Bullet mass/type Velocity Energy
200 gr (13 g) SP 2,450 ft/s (750 m/s) 2,665 ft⋅lbf (3,613 J)
235 gr (15 g) SP 2,475 ft/s (754 m/s) 3,205 ft⋅lbf (4,345 J)
270 gr (17 g) SP 2,380 ft/s (730 m/s) 3,400 ft⋅lbf (4,600 J)
300 gr (19 g) SP 2,110 ft/s (640 m/s) 2,975 ft⋅lbf (4,034 J)

Reloading Data
Bullet (grs.)Powder / (grs.)MVft-lb
200 SPIMR4064 / 58.024502665
235 SPIMR4064 / 60.024753205
270 SPIMR4064 / 57.023803400
300 SPIMR4064 / 52.021102975

See also

References



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