After years of using different powder measures, I've become convinced that your technique matters more than which brand you're using. FWIW, I use a Redding, but I digress.

How I do it:
1) Have a baffle installed 1/3 up from the bottom of the tube.
2) Always fill the hopper 3/4 or more.
3) Using a screwdriver held at the tip, I tap the tube 20 times on each side (L&R)
3) Throw 20 charges back into the can.
4) Adjust and weigh.

Been doing this for years and have < .1 grain variance.
With the Redding micrometer, I can accurately and quickly return to previous loads.

My $0.03 worth, YMMV.

__________________
-jwk-
US Army '72-'95