Another thing to take into accounts is moving at all kills sniper accuracy. You might as well be sniping with a shotgun if you're moving at all.
So with snipers after the patch you have to...
A. Stand still for about half a second.
B. Wait a second after scoping.
I've noticed the snipers not doing nearly as much damage as before. I used to get kills fairly easily but not it's kinda hard. If it is a case of waiting to get full damage then there should be some kind of indicator as to when that is. It's not a matter of not being able to quick scope because I don't do that, it's just not very clear as to why things happens the way they do.