When pig hunting once, we literally ran into a heard of pigs.
I can clearly remember every sound, cocking my S&W 29, hearing the hammer fall and the bullets striking ths pigs.
I didnt hear and bangs though.
Later on, I shot one more shot out of the 44 at a target - my ears were ringing!
I know that hearing damage happened while shooting the pigs, but I didn't hear the booms.
I imagine the same holds in the situation the OP describes.