I was watching Dennis Pritchard over on YouTube and he runs a dry patch down over his main powder charge then a heavily lubed patch with his round ball. Have you all tried this and have you noticed any difference?
I've not done a patch, but I have used cornmeal to form a barrier between the powder and the patched ball, as due to its fine granulation it completely fills lands and grooves in a rifle barrel. It stopped powder from burning or singing any portion of the patch, and were I using a very thin patch, might be a good idea, but it did not solve my accuracy problem
LD