147gr 9mm from a 1-7/8" J-frame chronos about 950fps for roughly 295 ft-lbs of energy. Everyone can make their own comparisons with .38Sp and .357Mag out of a J-frame and decide for themselves.

From the second link in post #35,
Heavy .38 Special +P Ammo
125 gr. L.V. Jacketed Hollow Point (1,050 fps/M.E. 306 ft. lbs.)

So, about the same energy as a standard 147gr 9mm at 5 times the cost.

As an aside, if measured from the back of the chamber like a semi, the 1-7/8" j-frame measures 3.5".