Chiming in late here, but I'll add my voodoo recipe for getting good coverage. I'm using the #5 recyclable plastic with .2g white plastic BBs, and Smoke's Clear. I just leave the BBs and powder in and add more powder as necessary. When I drop a bunch of bullets in to be coated, I put the lid on, swirl it around for 30 seconds or so, and then shake up and down 5-6 times, aiming for the maximum amount of "air time" for the stuff inside the container. My completely unsupported theory is that the swirling generates a lot of static from plastic-on-plastic friction/rubbing, and then the shaking gives the charged powder its best chance to actually adhere to the bullets while everything is airborne. I usually repeat the whole process twice for good measure, that is 30 second swirl, 6 shakes, 30 second swirl, 6 shakes.
Bullets get coated really well this way in all calibers I've tried, I usually have to tap the tweezers holding the bullet on the side of the container to dislodge extra powder.
That said, I'm using Smoke's Clear which apparently is one of the most forgiving out there, and I live in Utah where we have dry air 100% of the time, so that probably contributes to me getting a good static charge.