When I bought my Dillon XL 650 progressive loader The person that was selling them recommended the 100 gram electronic scale for powder measure. I never really felt comfortable making 0.2grain changes with such a large scaled electronic scale. I bought a Dillon Eliminator balance beam scale and the standard check weights. I found that my electronic scale was off between 0.3 to 0.5 grains. I got used to using the balance beam and it is just as fast and a lot more accurate for measuring your powder loads. I know in a 9mm or a 45 ACP it does not make that much difference on how accurate you are but when you are pushing +P loads I wanted them to be right on. The Dillon scale is made by OHAUS and is very accurate along with the test weights. I do not use the electronic scale anymore. I do not find it takes any longer and I feel good knowing the powder measures are right on. I feel it is worth the $90.00 for the weight checks and the Eliminator powder scale. I would recommend this scale to any loader If you are making really tight loads for riffle cartridges this is the tool you need. the max range on the balance beam is 551 grains verses 100 grams. That is a large weight difference.