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Discussion in 'Reloading' started by emmagator, Dec 8, 2011.
I would like to tune my scale myself, anyone know of any information on diy tuning?
If it a new scale , follow the directions.
There should be a brass weight that came with it,
you use that to tune the scale.gun)gun)
No. not new, my fathers old scale probably from the 80's. I bought some RCBS certified weights and the scale is innacurate according to the weights i bought.
If you haven't already zero the scale. I will assume you have cleaned it and checked all the pivot points. With the scale adjusted to zero the pointer should position itself at the center of its scale. If it is not there is a adjuster at the front of the scale that will move the scale up or down. Adjust that until the pointer is centered. Once centered check with the weights you have. Other than that its over my head.
May have been damaged. Good luck
I zero the scale, I've cleaned and checked pivots. My issue is when I put on 50 grains of my test weights, it doesn't measure 50grains
Several years back I weighed about eight or ten check weights on a lab grade electronic scale. None were dead on the money, and these weights were then measured on a second and third lab grade scale. All the wieghts were fairly close close, but never right on the advertised weight. (most all were within a couple tenths of a grain). I then checked each scale with a set of check weights that were certified by the Feds. They were very close, but once again showed an extremely slight error. I inquired about this error, and was told to clean the check weights, and they were almost perfect.
You can "Tune" the zero on the 10-10 by adding or subtracting lead shot from the part that hangs from the balance bar. If you shake it, it rattles, that is the balance weights, unscrew it in the center and inside you will find various sized little round weights, you can add (lead shot) or remove the existing weights to get the beam to balance.
BUT first make sure there are NO missing parts that may have caused the problem.
It should have all of the parts shown in the picture PLUS a little nylon screw that holds the fine adjuster in place.
Make sure you have the unit on a SOLID level surface, then level the scale body before you calibrate the beam.
"My issue is when I put on 50 grains of my test weights, it doesn't measure 50 grains "
So, how far off is it? That matters if it's a lot but doesn't matter if it's a little.
Absolute accuracy matters in a test lab when things are moving around and being weighed on different scales. Lab scales cost hundreds of dollars (+) and require professional routine maintainance/calibration to insure their continued high accuracy.
Reloaders normally develop charges with one scale and stick with it. That way we can reproduce any load at a later time so it matters not if it's off a few tenths, we can still duplicate it with high precision.
There are no adjustments that allow us to 'tune' a beam scale. All the little weights under the screwcover in the pan hanger does is get the beam leveled enough we can zero it with the adjustable foot.
Ok so i did as suggested and adjusted the lead shot in the hanger until my 50 grains of test weight zeroed out. So now i have a little more confidence when weighing. thanks for the help.
Now when you take the test weight off and set the scale to ZERO, both adjusters, does it still balance? It should!
If not and you have verified the weight of the Test Weight, there is still a problem some where.
It zeros to pretty dang close!
Sounds like you are good to go!