As I said, I did a report on this, in 2005, I think. There's no question.
Even with the assault weapons ban in the United States, there are differences of opinion on what's over and what's under the limit, but to me the test is what is reasonably used in hunting. I think you've answered your question very clearly. That sniper rifle for sure is not reasonably used in hunting. Therefore, one would conclude that it should at least be restricted and probably prohibited because it's very hard to make an argument that it would be used in target shooting either.