Orichalcum was a historical exotic material, though there's no obvious reason it would relate to ranged magical power.
Personally, I'd be tempted by just adding the bonus to quorx/crysx (+1/+2), but there may not be enough available bits for that.
Personally, I'd be tempted by just adding the bonus to quorx/crysx (+1/+2), but there may not be enough available bits for that.