Abstract: A railroad car for carrying a container comprising a car body supported by rail trucks adapted for movement over a railroad; the car body having opposing side walls and an end wall near each end connected to the side walls with said side walls and end walls defining a well in which a container can be received and supported; and guides mounted along each side wall for effectively reducing the width of the well space so as to center in the well a container having a width significantly less than the well width so as to limit sideward movement of the container in the well when the car rocks.