Any Math Guru's in here?

Discussion in 'Long Range Hunting & Shooting' started by Clayne B, Jan 17, 2012.

1. Clayne BWell-Known Member

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Bulldozer is 120 yards away. Mil value is Half so 1 Mil is really 2.

Here it is zeroed out

Here is the total adjustment used for shooting 500 yards with the .22lr

Also I am not using the scope for this adjustment. it is all in the base.

reference Picture, 1 mil= 2 mil

I came up with 25 mil
So if 25 mil at 120 yards is 108 inches?
then 108x 500yards is 540 inches so that's 45 feet of drop?

2. KRPWell-Known Member

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I don't understand the photos but 25 mil at 500 yards is 450 inches(3.6x5x25). You're correct though that 25 mil at 120 yards is 108 inches(3.6x1.2x25).

3. SamiWell-Known Member

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From the top to the spot on your second picture it is about 2.5MRAD if the dot distance is 0.2MRAD. 500 yards, that's 500 * 2.5 / 100 = 12.5 yards.

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5. SamiWell-Known Member

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When someone says mil, usually they mean 0.1 milliradian. It translates to 1/1000 of the distance (1 MRAD is 1/100), in this case 2.5MRAD equals to 500y * 2.5 / 100 = 12.5y.

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I don't understand what your asking ? Looks like you are trying to measure the dozer cab window ? Well 108 " is 9 feet, a man sits inside the cab. I would guesstimate the window 4 feet at best. Go measure the window . I believe you need to have your scope set at max power for ranging.

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size of target in inches x 27.778 / mil reading = distance to target gun)

distance to target / 27.778 x mil reading = size of the target in inchesgun)

Last edited: Jan 18, 2012
8. KRPWell-Known Member

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A milliradian is .001(1/1000th)radian. The prefix milli means 1/1000th of...like a millimeter.

9. SamiWell-Known Member

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Of course. 10cm @ 100m is 1 MRAD which is 1/1000. [email protected] is 0.1MRAD. I have no idea what I was thinking last night (nyquil is helluva drug).

10. backwoods83Well-Known Member

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In picture 1 at 120 yards you have apporximately 39.8moa from main cross hair to where the crosshair gets fat below the last dot at half value, at full value you have 19.9moa.