Originally Posted by Ogandydancer
I have never heard of it but, then I am far from knowing it all. So here's a question to the Gurus, does anyone make a 1911 platform about the size of the 5903 or Sig 229 in the .357 sig or .40 cals.? This is what comes from retirement your mind starts to ask you dumb questions like this LOL!!!
There have been though the years.
However, there is little logic to do it. The purpose behind the design of both cartridges that you mentioned was to allow smaller grip frames to be used. Since you are sticking with the long 1911 grip frame you might as well chamber the firearm for 10MM or 9x23 instead.