I've gotten 330 kills on a max population Bots vs Humans server, but that isn't even that unique :p
Plus I never take screenshots, glory is best celebrated in ones self and at parties.
Did get once or twice a 80+ kill streak or maybe over 100 on 84e public server, but when it's crowded and people stick in the same area's, it's not really that difficult with a mortar. ( + no trolls )