[m&p45acp10+1]

The adjustable charge bar does not do very well with the smaller setting. It works better at a higher setting. Also I am not familiar with the powder you are using, nor its metering properties. If you are getting charges that are within one tenth of a grain of eachother then that is as good as you are going to get with most volumetric measures. If you want exactly the same you will either have to set the measure for slightly under the weight you want, and trickle up. Or buy an auto powder dispenser. Also many digital scales are at best able to get a weight of +/- one tenth of a grain.

Oh and do not use the case. Use the pan. Look at the weight when you take the pan off. It should be the same every time. If not to withing a tenth of a grain of the proper weight then you will need to recalibrate, or get a beam scale.