The trick is to grip the rod just a few inches from the muzzle and work your way down instead of leaving a foot or more between your hands and the muzzle...
Not sure if you were loading or cleaning but after a few years you learn how much pressure is too much...When cleaning, make sure your patch is damp and work your way to the breach with smaller strokes...When it gets too tight, it's too late...With a patched round ball the soft lead ball will actually be sized to the bore if using a short starter...After the first few inches it slides down easier, if going down a clean bore...
I often go to a thinner patch after the first couple of shots to make loading easier...
Yes, straight grained hickory with no runout is the product of choice among traditional shooters...