A good reason to use "two scales."
For rifle loads a ChargeMaster (or equivalent) then manually weighing the 1st load -- every 10th load -- and the last load.
For pistol/revolver loads I throw the powder again manually weighing the 1st, every 10th, and last load.
Lastly I leave all charged loads in the loading block and visually check for consistent powder levels to identify any under/over charged cases, then and only then seat the bullets.
Barstooler
