It will work with some mods, we have 350 targets left printed on 11x17 stock, and having another 500 made up this week on 11x17, it can be done, the bulls are correct size. Possibly changing the color of the bulls for the scanner to pick up would help. I haven't looked at the 50m target, so can't say there. One problem I see is that air rifle BR is not big here to justify that single cost, if a club was also shooting ARA, the cost of another program wouldn't be that bad.
JMO,
JOe