Gunshots too quiet?

Last time I played the game was in October. Had to stop playing because my computer wasn't quite up to snuff and it wasn't as enjoyable as it could be. I have recently upgraded and have come back. Perfectly smooth experience but I could have sworn the gunshots had more of a crack to them. Now they sound kinda muted, like there's a wall between me and the gun in my hand. Was it always like this?