I hear yah. I took my 870 to range 7 one day, and let some friends shoot it. I thought it would be cool to see how they reacted to 3" magnum, heavy-load slugs.
The line was packed, every bench was full. The first blast from that gun and EVERYONE on the line stopped, looked over and stared. The range went from full on loud to pin-drop quiet in a nan-second.
I really don't know if it was the huge load report, OR the 4' fireball that blasted out the barrel. Regardless, it sure got everyone's attention!