I'm curious as to why you use leather? I prefer a flattened strip of lead. I secures the flint IMO better than leather and there is zero "bounce" when the flint strikes the frizzen.
Speaking of the frizzen I was watching a video (
) and this old gentlemen had mentioned the parts of the flintlock. What we refer to as the frizzen, he called the hammer. And what we call the hammer, he called the cock. If what he is saying is correct than by true definition of the phrase "cocking the hammer" does not mean pulling what we call the hammer back all the way. But instead means firing the rifle and the cock striking the hammer - hence cocking the hammer.
hmmmmmmmm........