Zeroing a gun/scope

[General Desire 22]

Is this a real process and if so, how do you do it (in particular the PU Scope)? Or is it just a "term" for shooting at a tree or a can of beans and then kinda figuring out from that where you actually have to aim if you want the bullet to go in a certain direction?
 

Cheers

[Greenjellie 4]

In your top right corner you'll see a number when you are holding a gun.
Probably 100 in your case.
Pressing the page up and page down keys will change this number.
It represents the range the gun is zero'd (?) at.
So 100 means the middle of your scope is where the bullet will be at 100m etc.
Estimating distances is just a process of trial and error (atleast, to me it was :P)

[felthat 84]

http://au.answers.yahoo.com/question/index?qid=20080702133648AAysoN3

about first part

[GpB311 236]

In your top right corner you'll see a number when you are holding a gun.

Probably 100 in your case.

Pressing the page up and page down keys will change this number.

It represents the range the gun is zero'd (?) at.

So 100 means the middle of your scope is where the bullet will be at 100m etc.

Estimating distances is just a process of trial and error (atleast, to me it was :P)

I just noticed the 100 last night and was wondering what that was since I knew it wasnt the amount of ammo I had...which is zero.