It's bugged me for probably 50 years since i first heard it.
When you listen to this song/record you hear the sound of bullets ricocheting,not lead shot. Yet the song is called shotgun wedding.
Good one! There are a whole load of incorrect gun tropes in media, our mind has expectations on what firearms sound like that were set by Hollywood back in the days of the Spaghetti Western and it's too late (for the layman) to change them.
So our hero is narrowly missed by a shot, and to know this, the audience needs to hear "PEE-OW!" as the bullet ricochets off a rock. In reality you hear no such thing, you hear a rather worrying and unexpected CRACK (like a wooden beam snapping) as the bullet creates a supersonic shockwave when it passes you. But viewers would think "what the hell is that?" so Hollywood perseveres with "PEE-OW!"
Same with your shotgun, if the audience heard the blunt boom / thud of an actual shotgun they'd wonder what it was. Insert a "PEE-OW!" and they know where they stand, that's a gun! See also the clattering "Chakity-ker-chak" sound when someone is handed or picks up a rifle in a movie, it tells you that this is a rifle. The reality... (of silence, so long as the weapon is servicable) would just confuse the minds of the audience. They need to hear Chakity-ker-chak to know a rifle is being handled.