I will turn it on and let it warm up for a few hours, calibrate it with the weights it came with and then press zero. It will stay on zero then start going from zero to .2 to .3 all the way up to .8 then settle back down and jump around for a little then zero and never stay at zero. No phones...
I took everyone's advice on here a while ago, and have narrowed down 3 potential loads. My lands coal ogive is 3.005. I did all my testing with a coal ogive at 2.975. I have tested some loads with 5 shot groups 2 seperate loads that are good groups but loads on either sides start to open up...