You must have meant to state that the other way around, .38 Super is far more powerful than .38 Special. I have fired lots of .38 Super from my Model 28, and never had any extraction problems. No modifications and no moon clips are required to fire modern Winchester and Magtech brands of .38 Super from modern S&W .38 Special and .357 magnum revolvers. I am not recommending anyone else do it, and I'm not going to do it in my aluminum J frames, but it does work.

The .38 Super is rimmed and has a straight case, not unlike the .38 Special, that is why they will work in the two ammo brands mentioned above.

Below is a pic of my Model 66 with a cylinder full of Winchester 125 grain .38 Super Silvertips...