Yeah I know. They do that for "balancing". A single round from pretty much any automatic weapon will never kill anyone in core. Even in the head. It is unrealistic, but you get used to it. Take a look at some of the damage charts for the weapons and you'll see what I mean. All the CoD games have been like that. Hardcore is fun and I would play it more, but like you said, everyone plays TDM. Down the line when the community is cut in half because they are playing something besides CoD, it is easier to find good lobbies because there are more people to connect with.