I've never double charged.
I have double balled, but realized it before firing (C02 solved the problem).
I have dry loaded (C02 solved the problem).
Never shot the ramrod.
Easiest shot missed: First shot ever at a deer, 7 point buck, 7 yards off bottom of tree stand (I was ~20' up). Buck fever=shot over back
Hardest shot attempted: First deer actually taken with it (and only up to this point). An old spike (10" cowhorns, 3 1/2 year old)...head was behind holly tree, shoulder showing, rest of deer behind holly tree, about 40 yards away. Put it through the front of the shoulder and dropped it on the spot

.
I took a harder shot for my first bow kill this year on a doe, as this time I only had abouta fist sized hole to shoot through and all I could see was the crease behind the shoulder. Turned out better than I could even have hoped for, as she only made it about 60 yards before piling up.