Needs review
Source: Epic Level Handbook

Description: You can ignore anything less than total cover or total concealment when using ranged weapons.

Prerequisites: Point Blank Shot, Precise Shot, Improved Precise Shot, Base Attack Bonus +11, Spot (20 ranks), DEX 21, Epic Level*

When throwing or shooting a ranged weapon, you can ignore any cover bonus to the target's AC (up to a maximum of nine-tenths cover) or any miss chance conferred by the target's concealment (up to a maximum of nine-tenths concealment). Your ranged attacks ignore the miss chance granted to targets by total concealment. You must aim your attacks at the correct square to gain the advantage of this feat.

Special

A character with at least 11 levels of ranger can qualify for this feat even if he does not have the prerequisites for it, but can only use it when wearing light armor or no armor.

Normal

Without this feat, you suffer a 50% miss chance when making a ranged attack against a target with total concealment.