.375 Whelen
The .375 Whelen cartridge 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.
