After many years and several thousand rounds measuring within 1/10th grain (checked on manual scales and with check weights each time), my RCBS Charge Pro electronic scales just died today. They were working just fine on Monday when I loaded about 75 rounds, but when I tried to get them working today, they were all over the board and would not hold zero or even weigh charge correctly. When I finally got the scale to zero and the powder dispenser light solid on, I pushed the calibrate button and it operated just fine---up to a point. One time through the procedure, it would calibrate and the light would come on solid that it was done. Then with the dispenser not turning, and the light on solid, and no powder going into the scale, the scale would continue to show weight increases of .1 grain about every 3 to 5 second. It would go up to about 6 grains and then start dropping a .1 of grain powder about every 3 to 5 seconds. Empty the pan and it would no longer show zero but anywhere from .6 to as much as 119 grain of weight of the empty scale pan. I worked for about an hour and a half trying to get the unit to work but nothing I tried worked and nothing in the instructions covers this type of problem. Guess I will have to go back to manual weighing and give this unit the deep six. As one member stated in another post, back to basics, james