On Thu, 9 Dec 2004 09:51:00 +0000 (UTC), (Geoffrey
S. Mendelson) wrote:

....

WW II led to some strange technology and aliances. For example,
Smith & Wesson made (and still does AFIK) a revolver in .45 ACP

....

FWIW, the 45 A.C.P. chambering in a US revolver goes back to the model
1917, manufactured by both Colt and S&W, with slight variations, of
World War One.