You can make exceptionally accurate attacks with ranged and light melee weapons.
Prerequisite: Dex 13+, plus Weapon Finesse if you wish to use this feat with light melee weapons.
Benefit: As described for Power Attack on page 98 of the Player's Handbook, except that the character may use either a light melee weapon or a ranged weapon. If using a ranged weapon, the target must be within 30 feet: it is not possible to strike with deadly accuracy from beyond that range. The bonus damage does not apply if your attack hits your opponent only because it is an automatic hit (that is, a natural 20).