Sniper is one of the more less-used classes, and the opponent dont really like them. (we love you too!)
Anyways, there are many tricks and stuff to being a good sniper...

1: The M24 has the most accuracy of all the sniper rifles and the damage is equal to that of the M95, if you are up against an enemy sniper, you'll have the distance advantage.

2: Firing when your target isn't looking in your direction will often mean you can stay up your spot longer and finish them off.

3: The M24 leaves a torso hit player with a measely 2 bars of health, if you switch to your pistol and fire some shots, not only will you save sniper ammo, but the pistol is silenced, so they cant hear your shots.

4: With every single sniper rifle, letting the crosshairs settle on the target for half a second before you fire will greatly increase your accuracy.

5: The SVD/Type88 are statistically the same, though the Type88 has a better scope imo. The SVD/Type88 do have 2 major advantages over the M24. The first being the double ammo. Whilst you need 3 shots with a SVD/Type88 to finish off a player by torso hits, compared to the 2 needed by the M24, that still means you can kill 3 people with a single clip and have a bullet to spare.
The other great thing is that they are semiautomatic, meaning you dont have to reload AND zoom out for each shot. Especially on city maps like karkand this makes this a great urban weapon.

6: Firing snap shots with the SVD/Type88 is a big mistake, the recoil and devation penalty per shot is very very high, firing 2 shots just like that will mean the second shot has more devation then the AK47!
Just letting the scope settle for a second will help a lot.

7: Whenever possible, try to keep moving, kill a few and move, you'll be most likely to have been spotted after a couple of kills.

8: There are some very good sniper spots on roof for instance where there are no ladders to. To get up to those, grab a Vodnik, park it next to the building and jump up. This can really be a great help because no-one expects you to be there and you can spot and snipe the hell out of the enemy team. A single supply box by the commander can help even more.

9: You dont always have to be on roofs or corner to get a good view, simply lying a bush or behind some cover is all you need.

10: The deviation of your sniper rifle is NOT affected by standing up, being on the hip or being prone, your stance does not matter, the accuracy is just as good standing as it is lying down.

11: If you see an enemy coming up to the ladder (he is still climbing the ladder) just switch to your pistol and aim for the head, it only takes a couple of shots and you wont lose sniper rounds.

12: When you are spotted like in tip 11, simply lay a claymore in a corner (they will probably check the ladder) and move to another position. The guy trying to kill you will probably hit the claymore and give you another 15 seconds to move somewhere else.

13: If you see a guy that has just come up the ladder, dont just lie there and die, stand up, switch to your knife and run to him like hell! The last thing they expect is to see a sniper gettin up and running at them with a knife.

14: At any close range, use your knife, you'll be far better off then with your pistol.

15: At some ranges your pistol is a good choice to use, especially when going around corners, switch to it when needed.

16: If you see an enemy sniper, SPOT HIM, hit that Q button and spot him for your team, they will know he is there and someone will probably check it out.

17: If you have killed an enemy sniper, you can go to his position and lay a claymore on at a corner. That sniper will come back and set it off.

18: Snipers are also good at taking out a commander, you got a long range weapon and a long run. If your team is being artyed all the time, ask the commander to spot the enemy commander and take him out.

19: Try to save ammo whenever possible, if you see an enemy laying prone with his back to you, switch to your knife.

20: A good sniper is a sniper that doesnt die a lot. If you see a tank, you can try to take out the gunner, but if he sees you, move, your no good being dead.

21: Bullet drop does exist, at around 300m or so its about a headsheight and increases as distance does. Also, your bullet is not an instant shot, aiming a bit ahead and above a distant target is far more likely to hit.

22: People in standing cars, AA's, TOW's, Machinegun's etc should be your primary target, they are a sitting duck and a headshot saves ammo.

23: For some reason, half of all the players seem to go prone and stay still when you hit them once...I dunno why but it just makes them an easier target, switch to your pistol though, it saves ammo.

24: If you are being sniped, go back a bit a head for cover. Then tiptoe your way back, looking closely at every meter of ground that opens up to you.

25: Snipers always have favorite spots, smoke stacks, chimneys, roofs, bushes, hills, silos, cranes you name it.

26: If you are not sure where an enemy sniper might be, stay in cover and keep an eye on his hits/kills. If he shoots 2 players that have a distance between them you can already geuss a bit where he might be.

27: Expect to find snipers in the weirdest places, always look on roofs where there is no ladder.

28: You have claymores so use them, if you are being chased, run around a corner and lay a claymore, your pursuer will probably end up dead.

29: You might be a sniper, but snipers are just those kind of guys that find themselves behind enemy lines and very able to take a backflag. If your team needs a flag and you're still way out back, then take it.

30: Medics & Snipers should be your prime target when it comes to classes, if you spot one, aim for them first, otherwise the enemy will get revived or you'll be sniped.

31: Whilst the accuracy and range of the SVD/Type88 is less then the M24, it beats it at medium range easily. At medium range you should be aiming for the head. I once took out a whole squad in one clip this way.

32: Dont lay claymores where friendlies go, you'll end up with a TK, place them strategicly and make sure you dont lay them in the same place too often.

33: Claymores can take out more then 1 player. If you are in an alley and you laid a claymore, then it can take out as much players as in the blast radius.

34: If you use the sniper rifle and claymore in a sneaky combination, you can lure in the enemy and kill them. Simply snipe a few guys from a group and make sure that group saw you for a splitsecond. Then lay 2 claymores, 1 from where you shot and 1 along your escape route.

35: You can shoot drivers from cars aswell dont forget that, its a small window, but its always a headshot.

36: Stock up ammo whenever safely possible, snipers are the class next to AT that run out fast.

37: There are many cases in which it seems that there is an invisisble wall just 1 or 2 cm's about the actual wall. This is true, most walls and objects have an inivisble collision around them which stops bullets, takes this into account when gettin players in cover.

38: Whilst you have grenades, you are no assault, so use them defensively instead. Just dropping one (not throwing) on the top of ladder where the enemy is crawling up will be far more effective then a claymore.

39: If you are on a building and there is an enemy in the alley next to you, switch to a grenade, it also keeps your spot secret a little longer since they wont hear a sniper shot

40: The M24 is very effective against people in vehicles, but keep in mind you have no body armor and that second shot will probably take too long.

41: Sniper rifles, especially the M24 can easily shoot through fences. With fences I mean those thin aluminum fences like those on karkand. The X will let you know if hit someone.

42: The X that indicates a hit is important as a sniper, when it comes to M24 players, it will signal that you hit your target and its probably at 2 bars, for SVD/Type88 players, it means they only need 1 or 2 more shots.

UNLOCK:

43: Whilst the M95 has the same player damage as the M24(leaving 2 bars) it is FAR FAR more effective against cars. Ten M95 shots will destroy a full health car!
The M95 can indeed shoot through armored glass, but the second the bullet goes through it seems to deviate a lot. None the less, I have killed many drivers through the front window.

44: The M95 has the same accuracy as the SVD/Type88, if you use it at that range you'll love this thing, but if you use it at M24 range, you'll be dissapointed. Using the M95 at SVD/Type88 range is by far the best and is a real killer.

45: Whilst the M95 has the same accuracy as the SVD/Type88 it has less bullet drop then those rifles, so you can aim a bit lower at longer shots.

46: The M95, like the M24 is bolt action, which means you have to reload when you shoot. If your flag is being overrun by 3 or 4 players and you are MEC/China, switch back to your semi sniper rifle, its more effective at flag range then any other.

47: The M95 does have a little less reload time per shot then the M24, its not much, but every bit helps. Keep this in mind when busy on flag work.

Hope this helps you snipers out there.