Let me start by saying, I've never fired a .357 cartridge.
.38spl+p is no problem in our SW642. It is stout, but no problem. I also don't think it is by any means underpowered in a SD situation. Thus, I would never, personally, choose to fire .357's out of a snubby. Why go through the major flash and bang which might disorient me as much as the BG?
Now, out of a larger-frame 4" .357, I think that is the round I would prefer.
.45acp, .40 S&W, 9mm, .38 Spl, .380 acp, 22lr
12 gauge, .223/5.56x45mm, 30-30 Winchester
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