Mine occasionally throws .1 heavy but never more and never under. The accuracy isn't as good as my 5-0-5 but it's close enough for anything not meant for peak accuracy. And that's just my OCD. My only gripe is waiting so long to add a dispenser to my bench. Such a time saver. The big thing for me is it drops stick powders as accurately as my measures drop ball powder. I've even used it with Red Dot which worked as well as stick powders.