Okay, it's not a cheat, and it's one of the samp bugs which are hidden from most of the new guys. It actually happens because of ping lag, rather than fps lag. How to make it ? You first need to know how 2shot is made. I will try to explain by drawing an imaginary picture over here.
First for those who don't know how to do 2shot :
Imagine yourself, in the baseball arena, where people use it for sometimes cws, sometimes deagle dms, mostly sawnoff duels 1vs1. You are running, and doing 2shot trick to train on your own, alone. Now imagine yourself in slow-motion, how do you do 2shot ? You're already holding space, running fast.....First aiming....right before the crosshair appears, you fire 2 times, (remember, you're still in slow motion, feel it like that), after firing 2 times, you scroll the sawnoff to another weapon and then back again to sawnoff, and shooting again. [off the slow-motion].
Now how to do the 4shot + 2shot ?
Actually this is not 4shot + 2shot, this is 2shot + 2shot + 2shot, but the first 2shot does not get synchronized with the target.
So, imagine this in slow-motion now, you are the guy who makes this trick, you aim.... you click fire button... Your character prepares to do the shooting animation, but you suddenly tap space button RIGHTTT before the bullets go out of the sawnoff, and in your screen, none of the bullets go out. However, you harm your target, because in his screen, this "space button" stuff does not get synchronized, and he gets shots. Now, after your unsuccessful shoot in your screen, you make another turn, and you do another 2shot, which is now visible in your screen. But how does this seem for your target ? For him, you made two TOOFAST 2shots, like combined, like 4shot, and you then make another 2shot. Actually, in your screen, as total, you did three different 2shots, in your target's screen, you did 4shots, and suddenly 2shots more.
Actually this trick doesn't happen always, it's a bit hard to make. Remember, the key to do it successfully, is to interrupt your character before he shoots the bullets, so your target will see the bullet, but you won't.
