Then you have a broken gun.
What he actually said was that if shots 2-10 go somewhere different than shot #1, the gun is broken.
Which is an absurd notion, since all the shots are going to different places.
I won't speak for Formidilosus but the way I took it was if shots 2-10 land in a different
group than shot 1, then something is wrong with the gun. Of course, this does happen and is common but is usually a problem with the shooter. I wouldn't think anyone would expect all shots to land in the same hole. If so they need to visit the Challenge thread.