SquirrelNuts
Member
I bought a RCBS Rangemaster 750 scale from Midway. I got the package, opened it up, and immediately turned it on. I tried to calibrate it, but when I would remove the check weights, it would come to -0.9 grains. I kept trying to calibrate it, and it eventually worked its way up to -0.4 grains after a fresh calibration. I checked the manual and it said to let it warm up if it has been in the cold. Well, it was outside at my door all day in very cold weather. I let it sit for an hour inside the house, and then tested it again. SUCCESS!!! I let it warm up and it would read "0.0 gn" when I removed the check weights.
I put the scale on my temporary bench and use it to load a few days later. I power it on, calibrate it, put the powder pan on it, zero it out, and then measure out 47.0 grains of powder. I pour the powder into a primed case and return the powder pan to the scale. The scale now reads "-0.1 gn." I zero it back out, measure the powder again, charge a case, and return the powder pan. Once again it reads "-0.1 gn." I must have done this 20 times until it would return to zero consistently.
Do I need to turn this scale on for an hour before I want to load to let it warm up so it will always return to zero? I like to take my time and trickle the powder until it hit the exact load to the tenth of a grain, so I would really like for it to zero each time. I don't seem to have any troubles once it starts returning to zero, but getting it there seems to take a while.
Has this happened to anyone else? Other than that, I love this scale.
-SquirrelNuts
I put the scale on my temporary bench and use it to load a few days later. I power it on, calibrate it, put the powder pan on it, zero it out, and then measure out 47.0 grains of powder. I pour the powder into a primed case and return the powder pan to the scale. The scale now reads "-0.1 gn." I zero it back out, measure the powder again, charge a case, and return the powder pan. Once again it reads "-0.1 gn." I must have done this 20 times until it would return to zero consistently.
Do I need to turn this scale on for an hour before I want to load to let it warm up so it will always return to zero? I like to take my time and trickle the powder until it hit the exact load to the tenth of a grain, so I would really like for it to zero each time. I don't seem to have any troubles once it starts returning to zero, but getting it there seems to take a while.
Has this happened to anyone else? Other than that, I love this scale.
-SquirrelNuts