H Gary. I am no expert in reloading, since I only did it for a few years with the same load for trap, but I found the different powders to be dirtier than others. For instance, I used Red Dot years ago, and it was very dirty. I even cleaned unburned powder residue from the barrel sometimes. In later years, I switched to Clays I think it was. I found it to be cleaner, but still not as clean as factory loads. Now, I dont reload at all, but friends tell me they all use Clays brand, and find it to be cleaner than some other powders. Good luck.
Steve
Steve