I hunted buffalo in Northern Australia with 860-grain Ipe (Brazillian Mahogany) arrows with good success and great penetration on two bulls. However, if you can get the Forgewoods, do so, they are the best there is----small diameter, heavy, and highly compressed (which makes them denser and more durable). I would have used them in Australia, but I only had a half dozen and couldn't get any ordered in time for the hunt. The Ipe shafts were a very good second choice and performed quite well.