Me and a few guys on the T&T server had the same thing. It doesn't register all the fires as 'hits'. Its still only firing its single shot but the effects and sounds are played.
This was several releases ago though. Before the Russian's were added to the map. I'm pretty sure it was Fools Road.
Scared the **** out of the guys protecting the hill but it doesn't actually do any damage to them.
Proof that cheese love is better then any other.
[R-DEV]Cheeseman: "As tempting as the woman in Katarn’s avatar might be I'd still pick Cheese if I had to decide between either one. "
in sandbox you could do that with stingers by using f... though for them it was probably intentional. i've seen things like this happen before on vBF2 i think.