Been powder coating for 4 years. I have been using clear powder coating from Paintball Kingdom. It had been working extremely well until about a month ago. I ordered some more clear from PK. When I started using it the bullets began to tumble (9mm). I noticed that the barrel (Glock) was fouling, not leading. I bake the bullets at 400 degrees for 22 minutes. I let them cure at least one day before sizing. I also noticed when sizing that some of the powder would flake off of the sides. This never happened before. I have used 3 different gun powders with the same results. I have also used 4 different clear powder coats including Eastwood and Prismatic. Any suggestions?
Gatman