I am subscribed to Midsouth Shooters mailing list and Glen Zediker has some good posts in their blog on reloading.
His recent posts have been on powder meters, AKA powder measures, and I found them to be informative:
Meter Use Tips
Thrown vs. Weighed
Has anyone tried his method of setting the scale up for 10 times the charge weight and throwing 10 charges for a total?