OCD1's suggestion is a good one for those that are super OCD!
If you couple it with Paul5388's scale method, you can use the dippers for "NOP" or "TUV" powder if you want. At that point, using a scale too, a big dipper gets you close and then you "trickle" in from the smaller dipper.
Now, I'm not that OCD when it comes to handgun ammo. A .5gr difference isn't going to make much difference (as long as it isn't an overcharge) in the way most folks shoot a handgun anyway!. That's a generalization, so, just cool it.
Here is Paul doing his thing:
And a link to the last thread where he posted it:
Tips and Tricks!
Good advice for those OCD folks!