Ken Stewart was born in 1934 and brought up on a ranch in the Machakos in Kenya. Ken shot his first Thompson's gazelle under his father's guidance at the age of seven. Having John "Pondoro" Taylor as a frequent guest at the farm, Ken's future career was sealed. After having completed his apprenticeship Under John A. Hunter, Ken started to hunt as a PH with J.A. Hunter. Ken Stewart was married to Cathy Randal Stewart. Cathy´s father The late Ken Randall was Harry Selby´s older cousin.
Ken later complemented the hunting operation with game catching as told in the book The Enormous Zoo by Colin Willock. The characters in the Hollywood movie Hatari were also based on the Stewart/Randall family of hunters and game catchers. John Wayne played the character of Ken Randall while Red Buttons played Ken Stewart. The Randall family was also involved in several other films, such as Where No Vultures Fly, Mogambo, Born Free and Joy Adamson's Born Free.
Ken Stewart started making core bonded bullets under the name Stewart Hi Performers for about 20 years ago. The bullets are renowned in Southern Africa for their superb performance on big game.
Ken also invented several wildcat calibers such as .458 3", .465 Salgado, .505 Gibbs Rimmed among others.
Ken Stewart was also the heavily involved in the making of the Norma African PH range of ammunition.