I have found a couple ways to skin that cat.
Unique was my Nemesis, 6 gr is my 357 plinking load. So I load lots of it.
PPM and the Auto Disk pro were very troublesome with that powder.
( I have since gottem the PPM to drop Unique well)
RCBS Unoflow drops Unique very well.
Solution and still make time.
Mount the UniFlow above the press.
I have since found a adapter to attach it to the powder through die. But Rube would be pleased.
You can also just attach the PPM to the powder thru die.