Depart123
The problem with electronic scales sometimes is the anti-drift software itself. The scale resists drifting by constantly returning the scale to zero unless the added weight is above a certain threshold. Often times 2 or 3 or 5 (depending on the scale) kernals of powder is below this threshold, so the scale doesn't register it. The scale thinks it is drifting. To re-check the charge, lift the pan up and set it down again.
That is why a scale can throw innaccurate charges and still register perfectly with the calibration weight.
That is why a scale can throw innaccurate charges and still register perfectly with the calibration weight.