Crossbow Dead-Eye (3.5e Feat)
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 Crossbow Dead-Eye [General]
For example, if your base attack bonus is +6/+1, you normally attack once a round with a heavy crossbow, then reload in the second round (without rapid shot feat), and attack again in the third. With this feat, you aim on the first round, attack for +7/+7/+2/+2 the second round, then reload and aim again on the third. If you use a +1 quarrel, this +1 enhancement (both to hit and damage) applies to all attacks. Magics which apply only to your first attack still only apply to your first attack. The total damage of these attacks may trigger massive damage rules.This feat is ineffective against creatures immune to critical hits, such as undead and constructs.
Note: This attack technique compares to a composite longbow with a 12 strength in a normal attack routine over two rounds. The bow requires four arrows. This technique requires one quarrel. As there should be some benefit to requiring three feats to use this technique, this technique reduces the overall cost of magic ammunition, and may greatly increase the effectiveness of some one use magic quarrels.
Note: With the rapid shot feat and this feat you could essentially take 2 full round attack actions AND a move action in only 2 rounds. It would be a move then crouch and aim, pop! Then repeat.