I found this back in June at one of my detecting spots in Savannah vicinity. In all the time I've spent outside in Ohio and Georgia, this is my very first arrow head. I don't know much about them. This one is made from a soft white material almost like oyster shell.
That is a beauty! Since this page doesn't seem to get much traffic, you might want to post that picture over on the "North American Indian artifacts" section. There are some very smart people over there that would like to see your find and may be able to give you some information on your projectile point...