I use W231 for most of my range ammo is most cartridges I load from the .32 Auto to the 45 Colt. (although I have changed over to HS-6 for the 45 Colt)
In my 9mm (short case) loads that I test and chrony
I find that Green Dot will match w231 in the fps department
with almost the same amount of power weight.
The long 38 case is a little different with the amount of powder used.
However this might be with the "Lots" of my powder, vs yours?