I just don't get it. If i had fingernails made from diamonds the coating might scrape off. I have been using this product since Februaryish. At first I too had issues to work out. Stay the course but don't slam a product many use and have had incredible success with. The curing time and temp is critical. The drying time is too. I just ran 100 .380 out of my tcp 2 days ago and no lead at all. Grouping less than 2 inches at 15yds. I use coww with 2% tin for .380 and .45 acp. These lower pressure rounds get black but I use gold for everything else. I coat 3x. is it possible you have too much alloy in your oven? Use a infrared thermometer and check the boolit temp itself. Air temp and alloy temp are entirely different. I like many here coat in 5# batches.