Oh and one other thing:

I read a test somewhere for lock speed. If your flintlock is tuned properly, it will be able to fire upside down.

Well I tried this one afternoon and sure enough it does work! However you must wear a heavy long sleeve shirt, preferably something fire resistant. When firing upside down the powder will burn down and outward toward your arm. If unprotectedthe burning powder will burn/injure you...

...as I learned one day, the hard way!

~Robert
PS: But it makes for a great story: "there I was, it was a hunred' degrees in the shade.."