fwiw, while I own a decent balance beam scale and several digital scales, almost all of my reloading is done with Lee Dippers. Over the years, I've modified Lee Dippers to create a set of around 32 of them. Depending on the powder, my smallest dipper throws about a .5 tenths grain of powder....next size up throws around 1 grain of powder, next size is around 1.3 grain.
I prefer rifle powders that are small grain and meter well with my dippers. An example would be any of the Ramshot rifle powders, Accurate 2700, Hodgdon H380, H100V or IMR 8208. With such powders, I can consistently throw a charge of powder that should be within 1/10 of a grain of powder. The H100V or IMR8208 may have .2-.3 grain variation.