I realize there is a reload forum but this question is directly related to clay games. I load in 12/16/20/28ga's and have pet receipes for each gauge -- problem is that while they all shoot reletively clean in summer, they shoot dirty in the winter with a quantity of un-burnt powder evident in the actions. The powders I use is Red Dot, Green Dot, Unique, Longshot, Clays and Universal Clays. Any suggestions?