"... where did the Magnum come from? Again, it was Doug Wesson who made the call. The Major was a renowned connoisseur of fine champagne, and in the vintner’s world the term “magnum” refers to a slightly larger than standard bottle. When Wesson went out to dine, he never ordered anything less than a magnum bottle, and it seemed to him a natural extension of the term to the slightly larger than standard case of the new cartridge. And so was coined one of the most enduring—and misunderstood—labels in firearms and ammunition history. "