the PBTP website is working for me right now. (Just fyi, the name is Powder Buy the Pound, in case you were trying to access the wrong site.) I don't have an actual count on how many bullets you can coat with a pound of powder, but it's in the thousands. A little powder goes a long way, and none of it gets wasted.

The screen I'm using is actually brass, but it doesn't matter, steel or aluminum would be fine. It's just there to keep the bullets off the bottom.

All of the bullets pictured were cast from air cooled wheel weights. I control expansion by adjusting the size of the hollow points.

458, the bullets don't need to be warmed. I think the powder sticks from static generated from shaking in the plastic tub. The bullets do need to be clean and free of lube, oil, etc, but fingerprints are fine.