The bonemold bow will most likely be used primarily by Hlaalu guardsman, within the confines of city streets. A longbow that can shoot ten million miles will be less useful than something more compact, yet still powerful. Like a recurve bow.
Bone arrowheads come in many shapes and sizes, so we have a huge variety to draw inspiration from here. That being said, these are the concepts I'm at right now for the bow, arrows, and quiver: