 Mr. Howe asked my permission to call this cartridge the .35 Whelen, but he alone deserves credit for its development.The 35 Whelen has an interesting history.It was designed by James Howe, of Griffin and Howe, partially in response to letters from Leslie Simpson and Stewart Edward White, suggesting that a good all-round rifle for African use would be one of 333 to 350 caliber, with a bullet of 250- to 300 grains (ideally 275 at 2500 fps.