Tried this out today but first I loaded it normally and with my upper body weight, leaned into the ramrod as usual to compress the powder. This works out roughly to around 70lbs of pressure on top of the ball.
The only mark on the face of the ball is from my short starter.
Next I did lifted the ramrod 12" off the charge and in the way of throwing darts, dropped it down the bore with some force behind it The old theory is that if the ramrod bounced, the ball was fully seated. I've tested this (Some years ago) with a ball 3/4 of the way down the barrel, completely aware it was no where close to being seated and guess what? It bounced! Where this theory came up, we'll never know.
Bouncing the ramrod to seat the ball consistently on the powder charge certainly is unattainable because there's not enough weight in the ramrod to seat a patched ball, nor is there any consistency because you are throwing it down the barrel with an unknown, inconsistent, pressure with your hand.
And in end, all we did was turn a round ball, into an off balanced semi wad cutter ball. Here's the same picture, only color adjusted to show the damage.