The thing that I have noticed about powder coating vs. grease/other (NRA Alox, etc.) lubes is that when a person starts to powder coat their bullets, they seem never to go back to the other lubes.
In my case, I built an heated enclosure to fire from to extend my shooting season (Michigan), and noticed that one of the advantages of shooting powder coated over grease-lubed bullets is the lack of smoke, not to mention the sludge that builds up in a gun when using grease-lubed bullets.
In regard to using range scrap, for my shooting (almost all low-velocity, soft lead), there has been no trace of leading when using powder coating despite thousands of rounds (96 rounds, seven days a week during shooting season) between cleaning.
In my case, I built an heated enclosure to fire from to extend my shooting season (Michigan), and noticed that one of the advantages of shooting powder coated over grease-lubed bullets is the lack of smoke, not to mention the sludge that builds up in a gun when using grease-lubed bullets.
In regard to using range scrap, for my shooting (almost all low-velocity, soft lead), there has been no trace of leading when using powder coating despite thousands of rounds (96 rounds, seven days a week during shooting season) between cleaning.