I have been using Gun Metal color solely for all my boolits since I started using Hi-Tek and it works well and less importantly, looks like picture says it should. I did however, have to bake a little longer (15min) and a little hotter (425F) than the instructions said to get it to work best. Just for a change I would like to use Red Copper when I run out of Gun Metal. Is it the same as to temp and bake time, or more like the instructions say? Also, I asked this on the Hi-Tek thread (the long one) but I didn't get an answer: Can you use more than 25% denatured alcohol to the acetone to lengthen the dry time so you can swirl longer? I would like to get the lube grooves coated better. I know it not important but they would look better !