Originally posted by CKtalon:
somehow I dun find the scope accurate..

Target on the crosshairs, but the rounds fly too low and hits the ground..

I doubt it's my technique..
More likely it's your technique.
What I experienced.... at different distances, you have to adjust your aim.
I'm going to have to go into Newtonian mechanics here... bear with me.
Anyway, the rifling (i.e. the internal grooves) of the barrels is meant to keep the bullet in a straight line. However, after some time, the path of the bullet becomes parabolic. To those who don't know what is a parabola, it is roughly the same shape as a semicircle.
This was what I experienced:
At 100m and below: The bullet travels in a more or less straight line. Thus you ought to be able to aim anywhere on the target. Obviously, try aiming for the middle. Don't try to be superman and aim for headshot (unless if it's Fig 15 of course)

At 200m: The bullet is in the upward portion of the parabola when it reaches the target. Thus, it will hit somewhere just above where you aim. Therefore, try aiming for the base of the target.
At 300m: The bullet is in the downward portion of the parabola. In other words, the bullet will hit just below where you aim. Therefore, you should aim for the top of the target.
That's what I experienced, and that was my reasoning. There may be holes in my arguments, though. Any comments.... anyone?