Post#6's .38 Special figures appear to be too low from my brief research.
Note, I don't have a chronograph and haven't chronographed my ammo.
I've only done a bit of internet research on a few .38 Special +P ammo data which indicate higher muzzle velocities from a 2" barrel.
Example for reference,
http://www.luckygunner.com/38-specia...rounds#geltest
which has a muzzle velocity for Speer 135gr .38Sp+P round at 797 fps (edit: the data on the website doesn't clearly distinguish barrel length for the muzzle velocity on closer examination.)