Is there any game modes that do not have a killcam?
Hardcore, but you also don't have a radar without a killstreak.
I played Mosh Pit a few times and had a kill cam.
Guess I have to choose a specific game type
Anything with the word "Hardcore" on its playlist, should not have kill cam or radar and be 1 shot kills (usually). Be prepared for A LOT of campers and everyone using silencers/dead silence tho.