if I spread a bag of 1,00 brass gas checks out on a cookie pan, and set the oven as ghigh as it will go (broil?) would it anneal them properly given they have a hour or two to heat, and then let them cool over night? our oven is pretty nice, with a digital thermometer, so I will know how hot it is ( and how hot it can go) when I try. what is the minimum temp to anneal brass GC's??? thanks!-Travis