Not according to all the other guilters. As for me I can't see that any of the shots were that accurate? Jeremy was supposed to have been a crack shot. If so then most as good as missed.
But he made sure the twins were dispatched,murdered in cold blood,or warm blood as the twins slumbered,one still sucking his thumb as an emotional throwback to a breastfeeding mother who was now intermittently absent,one day skipping down the lane hand in hand with her boys,the next day bedridden with the side-effects of her medication.Of course Jeremy couldn't understand all of this,but he did see the potential for using her as a scapegoat,and we do know that Jeremy was very good at using people to his advantage when the chance arose. How did Jeremy leave the scene;we really only have his words to Julie,but he would have known he had to pump multiple bullets into his victims first to incapacitate as he rushed up and down the Georgian staircase in the midst of night in an endeavour to fulfil his evil plan.