SWAT and multi-kills

Now to start off with, I LOVE SWAT, about 80% of the games I play are SWAT. The only thing that seems odd too me, though, is the timer for multi-kills. It just seems too long for SWAT when it is so easy to kill someone. Too put it in perspective, if I get a double kill on a normal game job well done, but if I don't get at least a few doubles or triples on SWAT it seems like I'm doing badly. Also with 4.5 seconds I have time to reload, look around for a bit, and miss a few shots and still am able to get counted for a double kill. This isn't really a complaint (it makes it much easier for me to get the multi-kill commendation), just something odd I have noticed. Has anybody else seen the same?