Yes. You "may" have feeding problems. Depends on your gun. The 9mm mag uses a spacer plate in the rear to move the bullet forward to compensate for the short 9mm round. If you reload it is easy to just increase the OAL of the round. Using a 147 gr. bullet allows you to increase the length to at least 1.200".
I am sorry I misread your post. Most people want to know if you can load 9mm into a 38 Super mag. The 38 Super is too long to fit into a 9mm mag. The Super is normally loaded to 1.260" with the 9mm at 1.135".