Both my digital and beam scales have a precision of 0.1 grains. Actually, with my Redding beam scale I could estimate precision to within 0.05 grains, but there is no point in doing that for reloading purposes. As I earlier said, to determine the average weight of handgun charges thrown by my powder measure, I throw and weigh an aggregate of five charges (but usually 2 or 3 charges for heavier rifle loads).

If anyone needs a balance having a precision greater than 0.1 grain, he'd need to use a chemical lab analytical balance. They will easily achieve a precision of 1 milligram or better. Some are capable of 0.1 milligram (0.0001 gram) precision. (1 gram=15.4 grains so 1 milligram=.015 grains)