So you are an expert on lethal force incidents, to be able to judge how many shots one should need to take down a man pushing 300#?
Tell us more.
I am not an expert, but will tell you that from what I have read, six shots is not that many. Guns don’t work like they do in the moves, and there are many cases of men continuing a violent attack long after suffering a fatal gunshot wound. Long enough to get you dead if you stopped to assess efficacy of your shots after firing one or two.
From what I have seen experts on surviving a lethal force incident generally recommend to keep firing until the threat has stopped, as here. Realize that many shots are made in just a few seconds, and that thought processes and reactions after a full adrenaline dump are not what they are sitting at a computer keyboard.
This thread may be too emotional or irritating for you, given your high demand for exclusively “expert” opinion only.
Have you informed all the other posters here, or just me?