I believe the OP was looking for a Semi-Auto in 357 Auto Mag specifically.
I'm not sure how popular these cartridges/guns ever became, as the recoil from such rounds would be unpleasant in a semi auto action.
No worse than full house 10mm Auto loads.
357 has more punch then a standard 10mm load doesnt it?
Commercial loads, yes, but they are barely hotter than .40S&W. My Hornady manual shows max 10mm loads as pushing 200gr bullets@1150fps and 180gr@1250fps. For comparison, it gives max .357 loads as 180gr@1150fps. And that is out of an 8" barrel as compared to a 5" barrel for the 10mm.
Mark