I use it. Works well for plinking loads and pistol loads. No more than .2gr most the time no more than .1 variances in powder drop. BUT it does not like stick powders. It meters ball powders REALLY well though. However if you are making up pure accuracy based loads you'll always want to measure your own anyways rather than depend on a manual or automatic powder drop mechanism. Takes long but is worth it.
Any powder drop mechanisms are only really for creating mass amounts of quick loads, progressive and what not. But if accuracy is your game, do it old school.
Funny, Benchrest shooters with their highly accurate center fire rifles normally just use a powder measure and forget about weighing powder charges.
Sorta shoots the above opinion.