finally got a pic of the second, failed, stone point. Made of raw Coastal Plains chert, I suspected it was not as strong as the raw Texas chert the first arrow toted. I guess I was right....
The point has a pretty good impact fracture taking off the point(1/2") and down one whole side. It hit a BIG rib and penetrated maybe 5-6 inches. Notice the binding, natural sinew, held tight without moving.
gotta go eat a burger, later....
troy