Pasty... if the point of the head is aligned with the centerline of the shaft, and if the head spins true, it will fly true. I do shoot them into foam once or twice to make sure they fly before I will hunt with them.
Bowspirit..I wish. Knapping is a talent I have not acquired. I trade, buy, beg or whatever to get my flint heads.
Jason..yes I did kill a deer with a flint that year and have an article coming out in a future issue of Primitive Archer about it.