Quite worrying.....wonder if the guy is an NSRA member..most fast pistol and shotgun powders can be safely downloaded with cast lead.....slow powders, particularly ball powders should be avoided. Everyone who uses reduced loads should read the "Lever action performance study website". The guys on that website spent ten years studying the various types of powders and loads for reduced loads in cowboy action shooting. The technicalities of combustion with various powders, are explained in detail. Many shooting clubs offer reloading courses and perhaps they should be compulsory.
amc577