This spring I am going to be bowhunting turkeys in Iowa. And it uses broadheads or bluntheads with a diameter of 9/16..How do you really know the diameter, especially if you already through the box, should the bluntheads be the same diameter of my carbon shaft or what? I dunno, last year was my first year turkey hunting with a gun, and I didnt get one, maybe I should stick with a gun...I dunno, thanks for the help