I guess I am lucky. I have a powder coat mfg. about 10 miles down the road. The guy who is the quaility control manager has become a friend and a fellow shooter. One test that he recommends is called the cross hatch test. I won't say how to do it but if you are interested look it up. He says the hammer test can be misleading. In his lab we under cured some coating and cured some the right way. Both showed the same results with the hammer test. Powder coat has a certain strength to it. When you fire a powdercoated round the rifling bites into the powdercoat. If it is not cured right the bite won't hold like it should. If it is undercured or overcured it will affect accuracy. I was a competitive shooter for 18 years and one thing I learned was that little things can make a big difference. Dragonheart,I have a proposal for you. From now on neither of us will mention anything about the thermocouple method. Most guys are doing it their way and refuse to change and that is fine. Everytime it is mentioned you might have one or two that like it but for the most part it is,you didn't come up with that so and so did. The main response is I throw them in the oven and walk away. I for one am tried of it.