scoped weapons suck, so bad, or i suck with them, with a stopping power (noob perk) and an mp40 i can get a 50 kill streak, but with a type 100 or shotty i can get like 20-25
I've seen someone with over 60...but that was because they were using a wall hack and an auto aimer with a LMG that had deep penetration and what not at kill house FFA.
Well, my highest killstreak was in Mw2, when I got a 33 killstreak off a nuke. However, the 8 extra kills were when the nuke went off, and others died before I did. So I'd consider that more of a 25 killstreak.
i'd say about a 15 with a MPL- Python combo on regular BO multi, maybe a 12 in mw2 with FAL red dot+noobtube, and a 9 or so with a scoped mosin nagant on WaW ( **** tanks.......)