you can see the disc, at least not with verweden brasrohren and normal heavy darts, arrows go so far as that they overcame in the plasterboard behind it. namely deep enough that you need a removal aid as a pair of pliers to remove the blowpipe arrows.
further enticed the dartboards numbering to the mistaken committing first that the thing FULL SIZE is, it is not! the disc has 20 or 22cm diameter tickets!