Shot many .38 and .45 ACP lead loads at steel coal hoppers. The bullets would splatter pinpoints of lead over a softball sized area, and the remaining bit of slug would be on the ground, below the target. But cap and ball revolver loads might be less powered, and softer lead, they might bounce rather than splatter?
I once shot a .22 pocket revolver at a piece of pocket notebook paper nailed to a board, at about 10 feet...the pure lead ball hit the nail, and came right back, up my sleeve, and stopped when it hit my elbow bone. I felt it run along the bottom of my arm. Not so much as a scratch, but that idiocy stopped right then and there.
Better to be safe than BLIND. Or having to explain to your spouse, or the police, why you were so stupid as to be trying to....