Excuse me for butting in here(being a Colt owner but my only S&W is a .38/200) but I know that Canadaicon actually manufactured Mil Spec .45 Colt ammunition during WW2. The stuff had a military headstamp and a RNFMJ bullet. I have a round around here somewhere in my junk; try to find it.

Hope this helps...... or even just adds fuel to the fire.
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