Horizontal distance in scope of Battlefield 3?

Question

Does anyone know if the scale between the vertical dot distance is 1:1 with the horizontal dot distance? In simple terms:

For the time it takes the bullet to drop 1 dot, is the same it takes a player moving at constant speed to move 1 dot across the scope? I know that it all depends on the speed of the player, but is there set ratios? So for a static weapon (L96 with 12x scope):

While player is running without sprint: 1 vDot = 1hDot

while player is running with sprint: 1vDot = 1/2hDot

While player is in a vehicle: 1vDot = 1/10hDot

EDIT: Added some more info based on the answer i got.

EDIT 2: I am not asking how to snipe. I already know how to do that. I am wanting to know if there is a reliable ratio or not.

Answer 1

I don't think that there are a reliable ratio.. cause there are a LOT factors you have to consider..

for example:

1. the distance between you and the enemy
2. the difference in height. is your position "over" the enemy? is he on a highground?
3. the enemy movement. as you mentioned: running with(out) sprint, etc
4. your stand: stay, crouch, prone
5. enemy stand
6. the bullet drop of the weapon
7. the scope you attached to the weapon (ACOG, 8x, 12x, ...)

i think the only reliable is training. the more you play the more you get used to all of the aspects you have to consider.

EDIT: This video shows a few tips, tricks and hints. I think this is a good video for the basics:

(sorry for my english.. i'm not a native speaker)

Answer 2

It all depends on the situation, fire a "guess" shot while looking down your scope to guage the distance and drop. Once you know the general bullet drop of shooting the bullet, you can start to rack up points by getting long distance headshots. Masterig uphill/downhill and completely level shooting is hard to do, but if you practice enough you're going to be a pretty damn good sniper the rest of the time.