The Expert Archer perk increases the damage dealt by bows.
|1||Your bows and crossbows now do +10% damage.||00563B90|
|2||Your bows and crossbows now do +15% damage.||00563B91|
|3||Your bows and crossbows now do +20% damage.||00563B92|
It is more beneficial to have some perk points spread out between Expert Archer and its variants than to put all three in Expert Archer, since rank one of all three perks increases damage more than upgrading a single Expert Archer perk multiple times. For example, having three points in Expert Archer gives +20% damage, but having one point in each of Archer, Expert Archer, and Master Archer gives +30% damage.