For shooting my slingshot through the house I have just enough space for ten meters. Standing in the living room the shot goes through the kitchen, hallway, laundry room and back room to the back wall. 😆🤪
👊 Re-paintable steel targets with multiple aim points that don't diminish seem like they could be pretty economical in the long run.
I saw a guy use a small paint roller stored with the paint inside an ammo box for renewing his steel.