the patch can hold a lot of lube if you use a grease/tallow
Those and any water based lube as well, for target shooting. I used grease cookies with PP bullets in long range match rifle
but never in a ML. No need. The PP bullets had no lube, thus needed the cookies, for shooting without wiping when using paper
patched bullet.
With a muzzleloader, when you load the next one, you wipe down the prior shot. The fouling is already moist due to the lube on the previous patch.