Reference SuperMan's post #28 above, like his my 940 exhibits very hard/sticky extraction with some higher pressure ammo. My 9MM Ruger SP101 on the other hand digests +P+, and any other type of factory ammo I've tried in it, with no issues whatsoever.
I tried this years ago, and some factory .38 Super ammo fits in some .38/.357 revolvers, but with the thinner rim headspace was excessive and sometimes resulted in pierced primers,etc. Interesting, but my curiosity about this has been satisfied. Without having the cylinders properly modified with moon clips to properly headspace, and for easy extraction, I don't need to experiment with this anymore.
I'd like to see more revolvers factory chambered in 9MM and .38 Super, even if they used moon clips
