Does anyone know what the coating is, on the new Federal papers. It appears to be more substantial than the old wax coating. The ones that I have want to go back halfway closed after firing. To reload them, I've been using a shell iron to open the mouth all the way. Whatever the coating is, it becomes very fluid when heated on the shell iron, but when loaded, they crimp beautifully. Let me know what the coating is, ifyou know.