Originally Posted by Dave_n

Not only that but if I remember correctly, the original Colt 1911 set up used a special 0.38 which was semi-rimmed and known as the 0.38 AMU (Army Marksmanship Unit). I do not know if the Colt ever was made for the regular 0.38 Special WC like the M52. Coonan Arms have just reissued their 1911 version in 0.357 Magnum and there are "reports" that it will also chamber 0.38 Specials due to the head spacing on the rim. Dave_n