Powdered Graphite
I use a lot of 800x (dispensed from my LNL powder measure) for my 45LCs and it is true that each charge must be measured.
It is a slow process, but there are things that can be done to 'speed' it up a bit:
1. get some powdered graphite and rub a very small portion of it into the hopper, and the bowl where the powder sits, just above the metering stem.
2. use a rubber hammer to whack the area just below where the hopper enters the dispenser.
whack frequently!
For me, this has resulted in many, many more throws that weigh in at +/- a tenth of a grain of the target weight.
BTW: be sure to use gloves when handling the graphite: it is very, very difficult to wash off your hands, clothes, etc.
One more thing: I put a couple or three of 2" washers on top of the powder stack. This helps a lot in preventing the powder from making a 'hole' just above the metering stem area.
--Nashtn--