http://kma35.minitroopers.com/b/view/miss1 (posted in 'Share Your Fights Here') <- That looks like a record. But the question is, how you want to categorise it? Longest killshot streaks? Longest fatal headshot streaks? Most consecutive killshots? Longest frenetic kill streaks? There is a plenty of categories to fill.
The replay is temporary, but there is time before I get to play that account again.