Down here in Australia (Oz), we have been shooting commercialy produced, PC bullets since the 1990's. Apparently, we were the ones that came up with this concept. I have used tens of thousands, of these commercialy produced PC (mainly Handgun but also .375" rifle) bullets, so I was sold on the concept, a long time ago.
I have only in the last couple of years, been coating my own home cast 0.375" and 0.423" bullets, but with complete satisfaction, and not a hint of any bore fouling/leading. Initally, I was coating the bullets with dry powder (via tumbling method) but of late, I have started using the same powder coating powder, disolved in Acetone. Two coats and two bakes, are required to get a good bullet coverage.
I really do need to get a proper spay gun for this job!
D'oh! Homer
-------------------- "Beware the Lolly Pop of Mediocrity,
Lick it Once and You Will Suck Forever"