Home Forums Reloading Varmint Rifles RCBS Rangemaster 750 question

I start using the RCBS 750 electronic scale and I noticed one thing. When loading for a 223Rem and I start at 24.5gr for a 50g NBT and do the first round and put in the case. I notice the sale starts to show - 0.1 before placing the pan back on the scale. Often when the next round or two is poured in the case it the sale will show -0.2 and I have seen this go to -0.3.

My question is since I want exactly 24.5gr and the scale shows -0.2 prior to placing the pan on the scale, to I weight up to 24.7 "to compensate for the -0.2"?

I know I read that these scales can be a bit finky with lighting and the like. But I make sure no bright light is shining on the sale etc.

What do you guys do that use a electronic sale and see these symptoms? Reason for asking this is when starting at the start level with the scale showing -0.02 will that bring my start a bit lower?

I never drop from the measure directly to the pan.

Just zero the scale and carry on. You should calibrate every time you fire it up with the check weights.

I usually just test mine before each use by placing a 40gr BT then a 168 MK on the scale.If the numbers match I start loading.I always zero the scale before I start also. I do calibrate but not every time I use the scale.

I got this working right. I think it was the florescent light that threw my Rangemaster off. I had a box covering the florescent lighting. I moved to another part of the basement that had a regular table lamp and was probably 2.5 to 3 ft away and its working now without decreasing weight after every loads. This scale is sure fincky but for me is much better than using the 5-0-5. I am going to have to try using the 5-0-5 and test with a range of weights and see which I like better but I think it is best to stay with something that you like to be consistent.