When I load up for hunting, it is in a clear barrel. I don't use any lube at all on the patch - just a dry patch. It goes down easily 'cause there's no fouling. Now, having fired that round into Bullwinkle, I load with an oil lubed patch ready for a quick second shot. If I don't use it, I hunt for the rest of the day, or spend it dragging 1000 pounds of meat to camp. but that evening, before I go to bed, I pull that round, or fire it off, and clean the rifle. Then I reload, again with a dry patch, before I retire. There is enough oil in the cleaned barrel to make loading the dry patch no more difficult than a lubricated one. And the powder is in no danger of contamination.