Why you are hearing the second report and can't track is due to the soundwaves bouncing off of one of the best reflectors, GLASS! Your hearing the same report 2-3 times at full volume right there. Think sonar or radar, and echos.
To the first about AR not being used on hunts I used my 3-5 times a year minimum, and when we are hunting hogs in South TX we use an Automatic usually on three round burst chambered in 300 Blackout with a can on it. Setting off a transsonic 300 Blackout from a bird kills hearing!