Deadeye Archer

Effect: 

Your attacks with d8 ranged weapons (heavy crossbow, longbow) now deal d10 damage per level. Your attacks with d6 ranged weapons (light crossbow, shortbow) now deal d8 damage per level. In addition, your misses with basic ranged attacks deal damage equal to your level.

Adventurer Feat: 

If you spend a quick action to aim before making a ranged basic attack, add your Dexterity modifier to the damage if you miss.

Champion Feat: 

Once per battle, expand your crit range with a fighter ranged attack by 4 (usually to 16+) for that attack. Declare you're using this feat power before you roll the attack.

Epic Feat: 

Your crit range with ranged weapon attacks expands by 1 (usually to 19+).