Rifling of barrels dates back to the 16th century and Wheellocks, in Germany, Austria, Switzerland, and the Scandanavian countries, where large game, at longer range were hunted.
http://www.answers.com/topic/rifle
http://books.google.com/books?id=D...X&oi=book_result&resnum=1&ct=result#PPA152,M1
Using a cloth patch and an undersized ball is generally accepted as having begun at least in this period, largely because the technology did not exist to manufacture balls, or ball molds that were dimensionally exactly the diameter of these early barrels. You see deep grooves in the few remaining museum pieces, indicating that they gunmaker intended the grooves to catch residue and would expect a thick cloth patch to be used around a lead ball to seal the gases from cutting or melting the ball, and get the needed velocity. Conversely, Shallow Grooves would have indicated that a closer- to- bore- size projectile, like a conical, was fired from these guns instead of a PRB.
By the 18th century, when some smoothrifles were in use by civilian hunters, and many shooters of muskets were aware that using some kind of patching to seal the gases behind the round ball in smooth barrel would give more accuracy, cloth would have been in use among other things. There are a few references to cartridges being sewn out of cloth,( particular in cannons)before paper cartridges came into more common useage.
I have never seen a specific written reference that dates the introduction of the use of cloth patches around lead balls, either in rifles or smoothbores. I suspect its just a minor matter that no one at the time thought significant enough to write about.
These skills were not ones that the upperclass of society, who could afford to attend private schools( there were no public schools until the early 19th century), were likely to either learn or write about. They could afford to have servants load their guns for any hunt. That often is the only explanation scholars can give us as to why nothing can be found in early literature about various subjects. At least they are honest.
I found the same problem when trying to learn who invented the shoe string, and how to tie the knot, and how to use a straight razor to shave. I did find a booklet showing howto properly pack, and why, a pipe with tobacco, at a tobacco shop, but it gave no information on how far back this knowledge goes, or who " figured it out".
There are many imponderables, Captain, and I was not put on this Earth to answer all of these things for you. I have never made any claim to knowing all the answers. How about doing your own research? :hmm: