Mr. Camps' article answered your question, more or less.
My experience is the most I can shoot out of a 360 PD snubbie is:
Fioochi's 148 grain Partially jacketed bullets, at 1131 fps
Buffalbore 158's .38 Plus P's, that go 1040 fps,
and,
discontinued
Corbon 125's at 1204 fps.
Anything more in a scandium, and, I either have a cut finger, or want to go back to something that's comfortable to shoot, like a .500 Linebaugh.
There are 9mm guns that will do 125's at 1200 fps, and, be more controllable, due to about 25% more weight, my Kahr PM 9 being one. Still, nothing is as easy to throw in a pocket as the 360PD, and, anything that is, is anemic in comparision.
On the otherhand, embrace the insanity. The flash bang grenade type flash
at point blank range, which is the limit of my shooting range, and better be in
the PRK for self-defense, can have some great results, making bad guys want to go the other way.
"Yes, officer, I can describe the bad guy. His hair is on fire, he's blind, and he's running down the street yelling for help!"
I guess S&W wised up, and, they added another 1/2" to the nighthawk series guns. This should give you decent ballistics, if not great.
3" would be REAL .357.
I do think there is a place for a heavy bullet .357 load, around 180-200 grain HP, but, at about 950-1100 fps, with a quick burning powder for snubs, or maybe a little less, like 950 fps. Why? I think the .38 is marginal on penetration with our current loadings, and, a heavier bullet at this speed might give that bit of added penetration I'm looking for.
Keep in mind that the Buffalobore Plus P 158 load only goes 15" in Gello, and that might be out of a REAL gun. All of the heavy bullet loads for the .357 I've shot have been too heavily loaded for a snubby, designed for hunting, with
too much recoil.