In your hands, any weapon becomes a deadly ranged weapon.
Prerequisites: Dex 15, proficiency with weapon, base attack bonus +2.
Benefit: You can throw a melee weapon you are proficient with as if it were a ranged weapon. The range increment of weapons used in conjunction with this feat is 10 feet.
Normal: You can’t throw a melee weapon without taking a –4 penalty unless it has a range increment (such as a hand axe or a dagger).
Source: Complete Warrior, page 105.