I took entry level shotgun training @ pistol range. No shotguns allowed on range. Training given before range open to public. Shotgun use on pistol range. 1 time class only. Trainer said practice shotgun @ county/NRA outdoor range. Went to range. Not allowed to shoot buck shot @ target 21 ft away. Reason miss target, hit wooden target stand, damage wooden target stand. Can only shoot rifle slug on rifle range @ required minimum distance. Didn't have rifle slug, could not shoot & left. Wont go back. Shotgun collects dust. Did I make a mistake? My thinking. If I can shoot a rifle slung @ distance. That does not mean I can shoot buck shot 21 ft. or less. Or should I practice @ minimum rife distance W/ rife slug & hope I hit W/ buck shot @ 21 ft. or less? Do all outdoor ranges not allow buck shot?