The blue book list is rather incomplete on German marks, even just looking at post WW II. There are for example 3 different versions of the West German eagle stamp used (the letter codes staying the same), and the East Germans used as DR stamp from 45 - 50. So don't rely on that list to determine a right or wrong for a gun of that time.
I used to love being able to hit hard at 1000 yards. As I get older I find hitting a mini ram at 200 yards with the 22 oddly more satisfying.