When I was growing up we had a full basement under our attached garage I started shooting down there when I was 5, BB guns and Pellet guns. When I was 12 I was on the YMCA rifle team, I would go through a brick of 22lr every night, the adults would shoot 9mm and .357 down there. the backstop was a cut off from a glue-lamb beam it was under the work bench. This was a 25' range and you could just barely hear anything in the kitchen upstairs. As an adult I daydream about having a house or shop with a range in the basement.One day, One day!