(UPDATE) Got my hands on a big ass breaker bar and even then still had to really rag on it to get em off, surprised nothing snapped, shit was on there at MINIMUM over double the torque spec lol. Also no, the impact wasn't going the wrong way, just didnt have enough power.

(ORIGINAL) Tried for much longer than this snippet of course, no movement whatsoever. How are these so ungodly tight? This impact is on a full 5ah battery and should do 350 ft lb's breakaway torque no problem at all. Tried my (somewhat) long ratchet aswell, no movement. Am I missing something? Worried if this much aint enough, more will sheer off a stud.