Combat experience in Viet Nam taught me otherwise. Somethng as simple as a brick wall can easily cause the sound to mislead you by 90 degrees. Echos can make a single shot sound like several shots from different locations. Muffled shots from a distance are substantially non directional.
Meaning the echoing effect is very minimal. Most of the honest witnesses were able to tell which direction the shot came from. So this is a moot point.