I agree with Vettepilot that screened powder is faster to make and you can kind of control the grainage easily.
Yes ,
The weight or density per volume is lower.
But the powder shoots great if shot by weight not Volume.
That higher volume of powder works good except in some revolvers.
The question is.
Do you want to make powder By volume so you can shoot more and more quickly between batches.
Or do you want to spend lots of time pressing and grinding batches to get powder that Kinda is like factory stuff but is still a little lower on weight to volume.
I do powder both ways.
And so far I shoot more of the screened stuff in my rifles , just because it is faster to make new batches.
Now as far as the use of Alcohol.
I never use it except in some batches where I feel I got the powder too wet and adding a little alcohol helps it dry out just a little faster.