I would think that people were always thinking of a way to get a quick (er) reload. A man who carriers a loading block for a quick reload after shooting a game animal, will have likely loaded his first shot very carefully. So an apostle or two makes sense, with stuff to do a careful load. We read of gun captains on old ships of making sure their first loads were the most perfect ball in the rack. After that it was only the nearest, since speed counted more then accuracy.