Having said that, I have not carried a flintlock rifle for years, and only use my fusil. Patch material was not used with smoothbores in the 18th century, in fact even early rifles did not use patch material. Some people suggest that the clasp knife was used to cut the patch material, but to my mind the whole process of getting this knife out, then opening the blade, cutting the material, closing the blade and putting it away again just simply takes too long when taking a second shot or more.
I welcome any constructive comments or information on this subject.
Trade butcher knives commonly used as hunting knives in the 18th century.
A more up-market hunting knife (Metmuseum).
18th century hunting knife.
French trade knives.