DuncNZ
54 Cal.
I use both Black English flints and Amber French ( Honey ) flints .and find them equally effective . I have used cut Jasper flints and found them to be most excellent , of the knapped flints I think the Black flints are the best because they are less likely to break than the Honey ones and a lot less expensive than the Jasper ones . One thing I have noticed on this forum is when members post pictures of their flintlocks a majority seem to be fitted with a French flint .