Me too- Roger- when other guys dry ball. Actually, even the flinter will allow sifting enough 4F into it to blow the dry ball out. If having to pull for some reason, the TOTW screw with collar to match bore size works perfectly.
Driling through the ball is not good, but is no problem - just use the right screw size and out it comes. This happened with a fellow's Italian gun a while back - last year on the trail, with an appropriate screw, out it came.
Just to ease things for everyone, Taylor made up a stainless rod with T-handle, muzzle protector, and a plastic bullet Box with every required screw and collar size for pulling any calibre balls. This 'rig' hangs in a two trunked Spruce Tree at the start of our trail. If someone has trouble(dry-balls) on the trail and wants to use a dedicated rod and screw to pull the ball, they merely walk back and pull it. I find it easier to sift in some 4F through the vent, or pull the nipple and sift in some 2, 3, or 4F and blow the obstructing ball out.
Instead of screwing with balls and such, I always used to shoot the load out then clean the gun at home. If going hunting again in a few days, weeks or months, I'd just leave it loaded. It's legal here as long as there is no powder in the pan (vent pic or feather in vent), or is not capped.
Like RB said, throw the rod into the ball, then 3 or 4 turns into the pure lead ball then try to pull it. 3 or 4 turns again if that pulls out and pull it. Never had to go further than 2 attempts. Well lubed, smooth bore - they come out easy. With a WW ball, I recommend drilling a pilot hole first.