 Furthermore, the introduction of the .458 Winchester Magnum, which could be chambered in inexpensive rifles, further put a nail in the coffin of other big-bore cartridges such as the .416 Rigby, which required an oversized rifle action.Due to the lack of interest, ammunition manufacturers like Kynoch ceased operations.However, by the 1980s, a renewed interest in safari hunting created a demand for big-bore dangerous-game cartridges.