Possible enchantments on bows:
*[[Circle of Cunning]] can be put on a bow to increase archery and bow skill.
*[[Nimbleness]] will reduce the difficulty of the shot by (Spell QL / 1030).
*[[Bloodthirst]] increases damage as it increases in power.
*[[Wind of Ages]] will increase attack speed, but only until 55 archery skill, at which point you reach the hard cap for a bow’s action timer. You should enchant the bow with Nimbleness instead of WoA.