Burrowing Bolt (Greater)

Ammunition arrow, bolt

These arrows have tips grooved like a drill bit and angled fletching, causing them to spin quickly about their shaft when fired. When striking a structure or object of Hardness 18 or less within your first range increment, an activated burrowing bolt tunnels into the surface silently and leaves a hole behind it, burrowing through up to 10 feet of material before magically vanishing.