I have an electronic jewlers scale that I bought a while back, thinking I could use it for reloading. I got it out yesterday & started checking it against a RCBS 502 & a Lee safety scale (both balance scales). I went to my local Head Shop today & purchased a calibration weight & calibrated it according to the instructions. The problem I'm having is that the jewlers scale is reading 0.5-0.6 grains higher than the balance scales on everything I've weighed (just been weighing different bullets & pieces of brass so far). I've zeroed the balance scales & they are reading within 0.1 grains +or- of each other. I used a 200 gram (3086.4 grains) calibration weight to calibrate the jewlers scale (thats what the scale calls for when you calibrate it). The scale says that it is calibrated, so I'm at a loss to explain the difference between the scales.
Anybody got any ideas?
Anybody got any ideas?