Some have forgotten this crucial information...

First of all, humans ears would be ringing and disorientation with panic would begin if someone started unloading 100+ rounds of any caliber inside...most humans aren't conditioned to this, so all these stories and individuals are lacking one thing..."my ears hurt" comment. Plus, some kids might've gone deaf for certain amount of time since their ears are still developing.

This is one big fat hoax, go to an indoor shooting range and listen.

Molon Labe!