Sniping in the ARMA 2 engine, this is not counter strike.

**Pint** · 06-02-12, 01:58 PM

Cut and paste from the Dayz forums from a community member named "thehumandignity" Pay close attention to how he converts a players size in the scope to an educated guess on range, that seems to be the most important point.

The M24 has a built-in rangefinder in the sense that you can use the mil-dot scope to get a quick estimate of your range to a target. You can also use the mil-dots to adjust for your zero (EG, if your target is at 100 meters but you're zeroed to 300 meters, drop one mil-dot from center of mass) and to calculate a lead on a moving target. Once you learn how to use the mil-dots, you will never want to use a scope without them again.

The basic formula is height of target in meters x 1000/Mils read = distance to target in meters.

So if you assume that your target is, say, about six feet (A little less than two meters), and he reads, let's say, six mils, then you divide 1.8 by (1000/6), which comes out to about 300. This means he is about 300 meters away, which in turn means that, with a 300 meter zero, you can place the crosshairs over your target and fire and reliably hit your target.

The formula for leading a moving target is a bit more difficult because you need to be more familiar with the rifle you are using. Specifically, you need to have a "feel" (since most people are not capable of calculating the time of flight for a bullet in their head on the spot) for how long your round will be in the air after being fired before reaching the approximate point of (intended) impact.

The formula for leading a moving target in a mil-dot scope is:

Time of flight (In seconds) x speed of target (feet per second) = lead from center-mass in feet

I'm using feet here because it is what I was taught for calculating to mils and I don't want to figure out a new formula:

((Lead in feet x 12) - 6)/Range (In hundreds) x 3.5

This comes out to your lead in mils.

Now, I'm not sure what the time of flight is for the CZ at any range, or even what round it fires, nor am I sure what muzzle velocity the DMR fires at. But if we're shooting an M24 at, say, 700 meters, then the time of flight should be about 1.07-1.08 seconds.

Take 4 feet per second for a patrolling guard, and 700 meters for his range, and 1.07 for our round's flight time.

1.07 x 4 = 4.28

To calculate that to mils:

((4.28 x 12) - 6)/(7 x 3.5))

(51.36 - 6)/24.5

45.36/24.5 = 1.85

So you eyeball where 1.85 mil-dots is, in other words just before the second one to the left (If your target is walking to the right), and place that over the right-edge of your target. Now you have a proper lead. Fire and, as long as your target doesn't stop or change directions in that 1.07 second, he should run right into your bullet.

Is there any reason to use M24 over CZ 550?

Another source for info on the SVD camo in dayz.

**SmokenScion** · 06-06-12, 04:14 PM

And Zeroing is?

**Blah64** · 06-06-12, 04:24 PM

Zeroing is the range that the sights are set to. When you look through your sight, the zero range is the distance at which you will hit perfectly. The bullet has projectile motion, so your sights are made so that the gun is actually aiming upwards when you are aiming. The bullet then flies upwards and it falls down so that the bullet crosses the sights aimed location at the zero range.

**SmokenScion** · 06-06-12, 06:04 PM

Originally Posted by Blah64

Zeroing is the range that the sights are set to. When you look through your sight, the zero range is the distance at which you will hit perfectly. The bullet has projectile motion, so your sights are made so that the gun is actually aiming upwards when you are aiming. The bullet then flies upwards and it falls down so that the bullet crosses the sights aimed location at the zero range.

So by adjusting Zeroing the I won't have to use the ticks on the Vertical axis below the Center to compensate for bullet drop?

**Blah64** · 06-06-12, 06:15 PM

The post talks about using the dots to determine the distance to the target using the dots(so that you can then properly zero the scope), and then figuring out the bullet travel time and using the dots for target lead.

So, you don't aim with the vertical ticks below the center. You use those to determine the distance the target is at.

**SmokenScion** · 06-06-12, 06:35 PM

Originally Posted by Blah64

The post talks about using the dots to determine the distance to the target using the dots(so that you can then properly zero the scope), and then figuring out the bullet travel time and using the dots for target lead.

So, you don't aim with the vertical ticks below the center. You use those to determine the distance the target is at.

So if I was unable to adjust the zero on the weapon I would have to aim the crosshairs above where I intended to hit, at a target farther than my zero.

**Pint** · 06-07-12, 01:09 AM

Originally Posted by SmokenScion

So if I was unable to adjust the zero on the weapon I would have to aim the crosshairs above where I intended to hit, at a target farther than my zero.

Yes for sniper rifles with out a zero function you need to know what your static zero is for that particular weapon, the dayz wiki says so for each. All of the sniper rifles that do not have a zero function have either a mil dot scope or another type of interface to gauge distance.