Rifle Scopes question on mil system calculation

[bobo]

I have been reading a lot on the FAQs section and have learned a ton. Maybe I have missed the answer I'm looking for in there somewhere, but was wondering if someone could help me out here.

I am currently shooting mil dot ret / moa dials (which seem to be neither s-moa nor true moa, but rather dialing approx 1.08 per "moa"). nonetheless, i am seriously considering going to the mil/mil setup, specifically the leupold mk 4 with tmr and m5 dials. I have read that the reticle and dial will match on this setup.

I understand the benefit of being able to spot how far you are off in mils, and simply make that adjustment in mils. I have a decent understanding of how the moa system works, but i am new enough to the sport that I am perfectly willing to learn mil, or both.

My main question is, what if I am at a distance that I cannot spot my hit through the scope accurately enough to make this determination, and therefore have to ride down and inspect the target. lets say at 800 yards, I'm off 10 inches. How do I calculate that correction in mils.

I have seen some reference to 1cm/1mil. is a mil equal to a cm just as a moa is 1 inch? if so, do i have to measure in cm's for corrections such as above.

thx for any advice or help you guys may can offer

 

[DezertBeagle]

Re: question on mil system calculation

I think it works like this, but I've been wrong before..
Some others can confirm or deny.

1 mil is 3.6" at 100 yd
3.6(8) = 28.8

so 1 mil at 800 yd is 28.8"


10/28.8= .35 mil

on a tenth mil scope..about 3 or 4 clicks will be the correction.

 

[bobo]

Re: question on mil system calculation

Thx. That wat i was thinkin. Makes sense.

 

[shootist~]

Re: question on mil system calculation

Or 800 yds is 80% (.8) of a 1,000. So 1 mil at 800 is .8 Yds; .8*36" = 28.8".

 

[Just Jim]

Re: question on mil system calculation

Or you could do what I recently did for a beginner's class. Just make yourself a "mil ruler."

I took a piece of heavy target paper, inscribed .36" hash marks along the edge, and then labeled them with their various values at 100, 200 and 300 hundred yards. Because I had shooters with MOA scopes as well as mils, I placed .250" hash marks along the opposite edge. I had this laminated to produce a more durable tool.

Cheers... Jim

 

[hrfunk]

Re: question on mil system calculation

10 / 8 / 3.6 equals adjustment in mils

10 / 8 / .36 equals adjustment in .1 mil clicks.

HRF

 

[A14]

Re: question on mil system calculation

(yards/1000) * 36 = X

where X = 1mil in inches at the specified distance

IIRC.

then just conert that into MOA. i only have knowledge of mil, so i wont derail or confuse with bs for moa

 

[Lowlight]

Re: question on mil system calculation

Man, you guys could over calculate a wet dream...

You have ruler in front of you, so use the ruler... it happens to be in Mils

For every .25 mil you see in the reticle, dial 1 MOA on the scope that will get you in there.

it basically translates to

.25 = 1 MOA

.5 = 2 MOA

.75 = 3 MOA

1 Mil = 4 MOA

That is gonna get you closer, faster than trying to play around with "N" x range... this works at any range, doesn't matter, 300 yards, 633 yards, 999 yards... where you see it in the reticle just dial.

Besides, can you really tell what 10" is in the field 800 yards away ? Really...

Read the reticle it is ruler... and to convert MOA to Mils you divide MOA by 3.43, so conversely if you have Mils and want to get the MOA multiple by 3.43. But assigning 1 MOA per .25 mils is much easier, and faster and will work better than trying to figure out what the linear distance is.

Figuring out Linear distance (3.6" x yards) is a complete waste of time and energy.

 

[DezertBeagle]

Re: question on mil system calculation

He asked how to calculate a 10" correction at 800yd, so I showed the calculation.

 

[Lowlight]

Re: question on mil system calculation

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DezertBeagle</div><div class="ubbcode-body">He asked how to calculate a 10" correction at 800yd, so I showed the calculation.</div></div>

He hypothetically asked, not understanding how to effectively use the mil reticle with MOA knobs, there is a difference.

Explaining how to spot the shot and measure the distance in the reticle, then applying that information to the knobs is helping him.

If he was really looking for a math answer you could have pointed him towards the Google calculator app. Giving him the long hand math answer isn't gonna help him be any more effective behind the rifle.

 

[elk addict]

Re: question on mil system calculation

This is the exact reason I waited for a mil/mil scope I could afford.... Math like his gives me a headache

 

[DezertBeagle]

Re: question on mil system calculation

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">what if I am at a distance that I cannot spot my hit through the scope accurately enough to make this determination, and therefore have to ride down and inspect the target. lets say at 800 yards, I'm off 10 inches. How do I calculate that correction in mils. </div></div>

So I showed him how to calculate it.

 

[bobo]

Re: question on mil system calculation

Thx for info. Defntly mor than one way to skin a cat it seems

 

[Lowlight]

Re: question on mil system calculation

Drive down, stick a spotter in the paper target, drive back, read the reticle.

It's good practice.

 

[redirt78]

Re: question on mil system calculation

subbed and tagged for the brain

 

[Engine 22]

Re: question on mil system calculation

Tag for reference.

 

[pharm762]

Re: question on mil system calculation

I usually use the mils I have and multiply by 3.5 if I dot have a calculator handy or you leave your phone in the car to prevent people from bothering you on your day off. It's slightly off but you can hit steel with it. Multiplying by 5s is faster for me. Hope it helps