I had something happen yesterday that I wanted to pass on. I was reloading some 7wsm rounds when my brother called. I was using my Lyman 1200 while I was talking to him and I noticed the weight jumping around 0.1-0.2 grains. Reset the zero a couple of times, and then it stopped. (I didn't realize that it stopped when I got off the phone.) I picked up the phone to make a call (the scale was set to 0), and as soon as I turned on the phone, the scale started reading the same 0.1-0.2 from zero! That's when I figured it out. I tried it several times and whenever I turned on the phone, the scale would start jumping around. I'm not sure how many rounds I loaded while talking (I figure 4-6) and I'm not sure which ones they were, but the amount of shifting wouldn't make them dangerous, but might make them less accurate. Anyway, keep off the phone if you are measuring powder with digital scale!