User blog comment:LOTRMod/The Update/@comment-26149161-20151108211857/@comment-25841881-20151109013825

I think that those weapons would have a low amount of damage, but like half of it being armor piercing. An example of this could be a mithril hammer dealing 6(+5) damage, but having 3 of it ignore armor. These would make the weapons weaker in general, but better against heavily armored opponents. I think that the blast protection enchantment would apply to reducing this damage though.