So I have read several threads explaining this perk, but I think they are either wrong or bungie has nerfed this perk. The info I gathered says that Headseeker works like crowd control where if u land a body shot first, whether it be a full burst from a pr or one or two rounds from one bust, the next full burst or third round will deal 25% bonus damage and u have a certain amount of time to use that bonus. I was excited to use this perk as I usually aim for the neck anyways but when I finally unlocked it I could not for the life of me get it to proc. I eventually discovered that the only way to get the damage bonus is if the first two rounds are body shots, then the third round is a bonus damage critical. If this is true then I just wasted 150 marks on the villainy. Please tell me I'm just unlucky and there is a better use for this perk. It's quite difficult to land 2 bodies and 1 head in a single burst and that is not much of a bonus. This perk description is too vague.