Ollij93's BowCraft Mod 1.8, 1.7.10, 1.7.2 adds three new bows to the game:

•  Iron Bows - Slightly stronger than wooden bows but a slightly longer draw time.
•  Gold Bows - Very quick to draw, same strength as wooden bows.
•  Diamond Bows - Quicker draw time than wooden or iron bows and the most powerful of the lot!