I have always done the shake and bake method in my house so I could control the humidity. I tried this morning outside with 53 percent humidity this morning. The powder wasn't covering completely but after I baked them it seemed to flow and cover evenly. I can tell the coating was not as thick as it is when I do it inside. I also bounced off the excess and didn't clean out the powder between colors so a lot of the dark spots are the mixing of different colors(blue on the green and red, purple on yellow and orange, and a little purple on the clear)...
I didn't even weigh them this time and color coat them within a grain of each other this time. I made a 50/50 batch of 4bn and 14 Bh with 2 percent pewter and going to run them full throttle through my 77/44 with a GC and see how many milk jugs full of water it will take to stop them and see how much weight retention I'll have compared to the 6 Bh that that looked like a smashed dime and made it through three water jugs at 1650fps.
http://imgur.com/a/94M7R6M