To say a little more about this "ramrod binding" thing, when the patched ball enters the bore, a oversized patch can do one of two things.
It can fold over the top of the ball where it will do no harm. If this happens, it won't even harm the accuracy of the shot because the patch will fly off of the ball as soon as it leaves the muzzle.
It can also form itself into the shape of the bore and if the ramrod tip (or jag) is resting right on top of the ball, the folded patch will grab the outside of the rod or jag.
If this happens and the patched ball is rammed down on top of the powder load, when you start to remove the ramrod it can drag the patch and the ball that's in it back up the bore.
The patch may lose its grip at any time, leaving the ball somewhere above the powder charge.
This effectively creates an obstructed barrel. If the gun is fired with this obstruction the barrel could be severely damaged.
I haven't heard of a muzzleloader blowing up from this happening but it could.