Here is my issue a friend of mine son asked he to clean his musket loader as I am the "gun guy" as he puts it. I have never even held a musket till today. Here are some pics For the most part it looks like its in good shape. Some rust on the out side of the barrel but its very light I will wipe it with oil and I think it will be fine. The problem for me looks like inside the barrel. I see a good bit of rust but I think it is where it has set for years. On a normal rifle I would run a patch thru it and maybe a brush but as I can't pull it out the other side not sure how it works on these. They also asked me about shooting it. I don't have any idea how old this gun is. My friends dad gave it to his son so it's at least 15 years but could be 100+ (don't think its that old because it's in pretty nice shape) What do I need to do to check it out to make sure it's safe to shoot?