My rifles and smoothbore need no wiping at any time, no matter the lube I use, from water + soluble oil, spit, Mink oil,
greases or super slippery lubes like Mr. Flintlock or LHV, yes still have some.
Sealing loads do not need wiping as there is no fouling buildup. It cannot, as the fouling from the last shot is wiped down when the next one is loads.
That was just one of the lessons in "The Muzzleloading Cap Lock Rifle" by Ned Roberts, published in 1935, IIRC.