Spent a little time breaking rocks today. Got some workable flints out of it. I'm starting to get a collection. They aren't the prettiest, but they all spark nice and make the gun go bang. During research on flint making, I discovered that the style I'm doing is called a "spall" flint, which preceded the French style that the English adopted. The only real flint I've found here'bouts was a golfball sized piece that was in the driveway gravel. It was the real deal and I ended up with three spalls from that piece that will clamp up in the lock and throw great sparks. Wish I had a dump truck load of that!