I find that I do quite well with snipers on certain maps. I find it really sad however when I am a sniper and have the only positive K/D on the team plus have the highest score in objective gamemodes. Kinda doesn't make sense to me but...

No I do not go around and quickscope everyone (I find objectively moving from spot to spot works best) but if I am running between points it can come in handy.

   Yes, they should be ohk weapons .......... but .......

    Silenced sniper rifles are seldom ohks

     Unsilenced snipers are ohks pretty often, I havent seen a chart that lists the damage,, but they are usually around 70 with a 1.4 or 1.5 multiplier for torso and head.   The problem with taht is every shot draws so mucj attention. You are not only a red dot, but the sound just draws more attention.

    Try the barret silenced with kick and be ready to doubletap.

    I also like the rsass .......... its takes more hits to kill, but it has a really high rate of fire and almost no kick. Get used to firing 3 quick shots. If you fire fast enough you can get off all three shots witthout recoil. If you dont fire fast enough you have to let the rifle recenter between shots. You may even need 4 or 5 .........

    Find a good spot, HOLD STILL, and be patient. If you arent fairly sure you can get the kill, dont try.

    Personally I enjoy seeing how many kills I can get from one spot without moving. To me, thats the challenge of sniping. It sometimes makes more sense to move between kills, but more often than not moving is when I get killed.

    Try to find a spot with plenty of view and at least one side protected. Take your time once you ads  and dont drop until a few seconds after your shot. The killcam is a sniper's worst enemy. But seeing someone scoped in for the whole killcam makes it togher to locate their position. Dont bother trying stealthy sniping in hc ffa. The spectator cam will trip you up frequently.

    people also complain that the maps are too small, and not good for sniping. I disagree. There are several really good sniping maps, and almost every map has a spot or two that are decent.

The higher power rifles (.50 cal, MSR, L118) are supposed to be OHK to the Head, Neck, Upper chest and Body Core (all cause 98 hitpoints + the multiplyers)

The AS50 will get you all of the above accept body core. (98 hitpoints, but no multiplyer on the body core)

The dragnov is crap, only 70 hitpoints (I think the RASS is there as well, but it can be spammed)... OHK to head only(?), maybe neck.

If I remember Ghamorra, you use the AS50 (I used to use it all the time). I switched to the MSR for the added OHK capabilities.

With the lag etc, maybe the shots are registering to the body and that may explain why you are not getting a OHK (you aim for the upper chest but it registers in the gut).

Since I switched to the MSR, the only time I do not get the kill with 1 shot is when I hit them in a limb (sometimes I have no choice because that is all I can see)

If you want fun sniping go play World at War (CoD5) very good maps and like 5 bolt action rifles that you can use with iron sights or scope