Double Tap is saying 740 fps in a 2" barrel, so 700 for a 1.875" is a reasonably conservative estimate. Should be a tad quieter subsonic and less recoil.That would work great. Probably in the 700fps velocity range. If would work good.
@BehindBlueI's I believe likes the Wadcutters as well.
Edit:
These had a velocity avg of 709fps.Cheap 38 Special Ammo For Sale - 148 Grain Super Match Wad Cutter Ammunition in Stock by Winchester Super-X - 50 Rounds
Cheap 38 Special Ammo In Stock by Winchester - 148 Grain Super Match Wad Cutter Ammunition by Winchester For Sale Online at LuckyGunner.com - 50 Roundswww.luckygunner.com
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I also have a box of Black Hills Honeybadgers .38 Special +P , but figure that could get me in big trouble with a prosecuting attorney, those things look like they are made to rip, tear, and cut.