To answer ugly old guy, What is "Ball Creep"? Lets return to the original post.
In the original post,
@Smokey Plainsman was talking about a fouling crust ring building up where the ball would rest on the powder. As the crust ring built up, the ball would not seat as deep as observed on previous loads. He too was concerned about moving off the powder charge and creating a barrel obstruction.
After 60 posts we have determined that it is important to deal with the fouling crust ring to allow us to load with the ball seated firmly on the powder. Most of us solve it by wiping with a damp patch which keeps the fouling soft and the crust wiped out of the bore. How to eliminate the crust ring is a balancing act of jag size, wiping patch thickness and cleaning material The fluff up is that we have different means to achieve the same result.
Use what works for you while avoiding pushing fouling into the breech and causing failures to fire.