Truthfully in my experiences and knowledge it trully depends on what bullet you are firing but in that movie, from what I know she would have never left that room unless it was in a rubber bag. 6" from a window and a low powered round like that, they are not going to stick. They are going somewhere and that was a small room. Low powered as in handgun, and not a rifle with a trully supersonic round. Then you can get into armor piercing and then cold brass lathe turned solid rounds meant to do one thing only and that is to tear something off at a long long distance. At a short distance, say 100 -300 yards. I seriously do not want to be the guy sitting behind the glass as its being tested.