Back in the pistol days, BullsEye was THE powder for .38... 2.7 gn of BE behind a Bingley 148gn HBWC was probably the most commonly used handload, maybe up to 3.0 gns in .357 cases.

However, nowadays barrels are at least twice the length they were back then, so slightly slower powders are used...things like Red Dot or Unique, Vit 320 or 340 or Accurate #2.

I was always a firm fan of Red Dot, but like most of the Hercules powders (sorry, showing my age... now Alliant powders) its a bit dirty, which is why i now use Vit 320.

Obviously this is for gallery rifle type ranges.... 25 & 50 yards max.

Once you start looking at longer ranges you need to bump up the power and use slower magnum powders... like Blue Dot and Unique

HTH