Yeah, like how your clothes washer and dryer gets painted back at the factory. An electrostatic spray gun puffs pigmented particles at the boolits which are on a tray. The tray has a ground wire clamped to it. Then the boolits get baked in an oven at about 400 degrees for 20 minutes.
That is one method.
The other method is to buy the powder coat, but not the electro static gun. You then mix in a few tablespoons of powder into some plastic tub with a tablespoon of lacquer thinner, shake it up really well and then tumble your boolits in that. The boolits are then spread on a wire mesh trash, shaken a little bit to get off the excess colored liquid. They are allowed to set for a little while so the lacquer thinner can evaporate off. Next, they are put into an oven just like with traditionally powder coated parts.
That tumbling method is called the "piglet" method, after the screenname of the guy who came up with it.
It seems like the next best thing since sliced bread.
Some guys are saying they are able to push .308 cast boolits to jacketed bullets velocities. If that is true, WOW!
Just doing a quick image google search I found these:
Boolits recovered from the back berm after having been shot, showing that the powder coating is still intact:
Some .300 Blackout ammo, maybe one color for the sub sonics and another color for the super sonics:
It is all still very new, and people all over or experimenting with powder coating boolits and making advances all the time. The mother of all powder coated boolit threads is here:
http://castboolits.gunloads.com/showthread.php?171403-Powder-Coating-BoolitsThe piglet method is described here:
http://castboolits.gunloads.com/showthread.php?202316-HFPC-Boolits-Piglet-MethodI just figured I would help out some of my fellow Down Range forum members. If anything, keep this in the back of your mind for when the next ammo panic comes.