Avoid the flat powder coat colors, as they may have abrasives in them, but the glossy powder coat seems good to go. I haven't used bullet lube in quite a while now.

tmax, try it without the plastic BB's, just bullets and powder in a plastic margarine or yogurt tub. If you have good powder, they are completely unnecessary. Best I can figure is some people just have to complicate things; don't know why else they'd use them.