: While the game still uses iconic blast and flamer templates, the rules for scattering and determining hits have been tightened to speed up play.
This is the holy grail. Remember the "Reaction" table? v20 adds a "Weapon Reference" section at the back that is color-coded by weapon type (Melee, Pistol, Heavy). It cross-references Breaching, Sunder, and Instant Death in a way the GW index never did. horus heresy 20 rules pdf better