In what scenario, aside from a ranged sunder Combat Maneuver, would having an adamantine arrow be useful?
Weapons fashioned from adamantine have a natural ability to bypass hardness when sundering weapons or attacking objects, ignoring hardness less than 20.
Yes I know that adamantine works very good for sundering, but I do not plan on taking the fighter archtype archer to gain the CM ranged sunder.
I also know that ranged attacks suffer 50% damage reduction to objects.
So since it is most useful when sundering, which I wont be doing, when would it be useful to bypass hardness under 20?