They didnt nerf anything nor will they ever. Its called, you just suck today. People need to stop complaining about nerfed guns and accept the fact they aren't good today. Keep using it and just get your feel for it back. And the people that say it is nerfed, its the placebo effect. He suggested something in your mind and you are gonna follow it.
after using it for a while i felt the same way, but i took off the silencer and put on fmj and it was back 2 beast.... its all about the attachments, other than that the tar is one of the best guns in the game
When I use the Tar with silencer and cold-blooded, it takes 4 or 5 shots max to kill someone (from the recoil)... and the recoil seems like A LOT less than when used it during 0th prestige (yes, zero! xD )
And surprisingly... the Acog scope is a headshot master for this gun! at long distances, you need to single-fire, but that's not a problem... 3 bullets? lol