Most kills with a single weapon?

[Tomcat]

In TF2 i got 56 kills as a engie and 35 kills as a heavy

[ursus]

I tried this when i saw it in your sig, I thought it was a barrel you knife.

I threw a knife at the barrel, didn't explode.

Ruben gave everyone knives. I knifed one person, took their knife, and knifed the next.