Diameter for 9mm is 0.355
Dia. for 380 is 0.356
Dia. for 38 spc. is 0.357
Loading data exists for 90, 95, 115 gr and larger bullets for 9mm.
I have loaded smaller dia. in a larger dia. rifle, shooting 310 bullets in a 311 barrel.
I haven't loaded the other direction, but I know it has...