well I have an old scott parker tuned ohaus 10-10, a chargemaster, 2 gempro 250's and a ohaus yj102

I also have a lee perfect powder measure and a Harrell precision BR powder measure

what I do for long range stuff is throw charges, weigh and trickle (I have the omega electronic trickler) on one gempro and then check the weight on the second gempro. If they agree I feel the load is accurate. I can do this faster than my chargemaster and know it is much more accurate.

hunting and other range ammo I set the powder measure up with the gempro and throw charges. This is the fastest method.