Thank you. And what was the magnitude of inaccuracy?
I don‘t think I need to tell you that 0.1 grains are the equal of ..00648 gramms.
If a reloading scale is capable of 0.1 grs. accuracy, it is fit for purpose.
It should also be clear that all reloading scales, be they mechanical or electronic, cannot possibly live up to the accuracy of laboratory instruments at a high multitude of the price.
It is of course up to you to use your own yardstick, but moving to mechanical scales will solve your perceived problem.