Hi Drysound, I'd say 50% have very slight pin holes. At worst case they're small, maybe .015 to .020" in diameter. If my hand is really steady placing them down then there's no pinhole. Even with the imperfection I can't imagine it affecting the coating or balance much at all. My bullets are all tumble lube grooved. I try to pick up at the top groove. I found if I tap them gently when I pick one up it knocks off excess powder but leaves plenty to coat. It sounds tedious but it goes pretty fast. I find myself with nothing to do after the first couple batches while I'm waiting for more to cook. I guess I could clean the garage... naw.
Update: I shot some bullets with a candy blue powder coat yesterday and used the bullet lifter to put them on used but clean foil. Maybe 10% have slight pin holes from the lifter. The ability to flow and fill in minor imperfections may vary with different powders.