What you want are Speer Gold Dot 135gr Short Barrels. They make them in .357 and .38+P, but the .357 version is pretty mild... chronographed at 1050fps out of my 2" 640. They have a very aggressive hollowpoint that's designed to expand at lower velocities, and use a low flash powder so you don't get blinded by giant fireballs when shooting in the dark. It's great ammo...the trick is finding it in stock.I do wish they made some light .357s, perhaps just a bit over .38 +P because then you don't foul the extra chamber area with .38s.
Also, whatever ammo you pick make sure it hits to point of aim for your gun. With the wide range of .38 loads out there and a fixed-sight gun, that can sometimes take some experimentation.