Needs review
Source: Complete Warrior

Description: In your hands, any weapon becomes a deadly ranged weapon.

Prerequisites: Base Attack Bonus +2, DEX 15, Proficiency with Weapon

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).