Powder measures all vary from brand to brand. The U-view is one of the most consistent ive found, and close to actual. The main thing with a volume measure, is to find what groups best in your gun, with your preferred load. you may find that its (for instance) 95 grains volume, BUT if you poured this measure into another brand, say a brass measure, it may read 90 grn (or 100, etc) its really just a matter of using the same measure, OR that volume to determine what your weighed charges will me. Say if you want to weigh from then on, once you have established your preferred load, you could then weigh each charge and use load tubes. But for the most part, for hunting purposes, a grain or 3 either way wont make a noticable difference for the vast majority of shooters. Match shooters, or the constant tinkerer will usually weigh for the utmost in consistency. But in truth, the majority of guys wouldnt notice the difference.