As far as I understand it, there would not have been any Model of 1917 S&W Revolvers factory Chambered for .45 Colt.


Though there were some very few 2nd Model Hand Ejectors which were factory Chambered in .45 Colt, just as there were some chambered in .44 WCF - .44-40.

There was a very nice one in fact, a 2nd Model HE in .44-40 a few months back on Gunbroker, and, I was delighted just to see one even if only in images. It actually sold pretty reasonable, all things considered.

Unless attending an S&W Collector's Show, few to any of us will ever see either.

The 2nd Model Hand Ejectors which were originally chambered in the .455 Eley for use by Commonwealth Countries in the 1914 - 1918 War, those are what one encounters now chambering .45 Colt, for their having been modifed to do so. And, sometimes, often really, their Barrels have been re-Stamped to say "45" instead of .455...usually by obliterating the last '5', but any sort of over-stamping is possible.

The possibility of encountering an original factory 2nd Model HE in .45 Colt would have to be truely astronomical in any context other than that of an S&W Collector's Show.