This puzzles me a little. I've never had a problem with Unique in my RCBS Uniflow measure. I use the small chamber and a baffle along with the "double tap"method on the handle. Double tap means raise the handle up and tap firmly on the upstroke. Lower handle about 1/3 of the way and then up again firmly. Then drop the handle all the way down firmly to dispense powder. Raise handle 1/3 of the way and then down again firmly to shake out any grains that may be stuck in the dispenser chamber.
The above said, it is obvious I am not using a progressive press; I load with a single stage in batches of 50 cartridges, one operation at a time. If one has the ability with his press to use the "double tap" method, it may help with getting uniform charges with Unique powder.
I don't know if Nick_C_S uses my method, but he also seems to have worked out a way to accurately measure Unique.
