MOA questions long range

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Grendeb

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EDIT*
I have red a lot lately to understand and make up my mind on all this.
I have not found how the hell you make correction on a Mil scope, all I hear is range estimation and nothing on how to define/choose how many mils you must select on your scope to be on target. Is it like Moa? if I have 12'' drop at 300yards and that 1moa=3'' @300yards how many 3'' fits into 12'' drop=4moa is that the same with mils or I'm missing something because nobody talks about this but ONLY about how to find range.

So 1mils is 1cm@100meters you make adjustment with 1click=0,1cm. so 1mil= 3cm@300m correct?
Since I have a drop of 12'' (30.4cm) is it like MOA where how many mil fit into the 30cm? if so 30,4cm/3cm=10... this would represent 10 mils on the turrets?
I find this really confusing and hard to believe it's possible to make 1000 yards shots if a scope only have 19mils of adjustments...

I know I'm definitely missing something.
Thanks for the explanations.

ORIGINAL POST

Hi,
I started long range shooting about 3months ago but red a lot on the subject before. I basically rodded my rifle and tried to find the best ammo a 100yards now I'm having questions, from my pov it doesn't make sense so your input would be appreciated.

My rifle is a savage 10fcp-sr 24" heavy fluted barrel 1/10 twist mounted with a bushnell elite tactical 4200 6x24x50 (sfp) with a 20moa base. The scope zero is at 12x i.e. 1" from center to the first dot and should be 0.5" at 24x and 2" at 6x correct?

I got 1" group with rem corelokt 150gr surprisingly it's what the rifle like best.
The sight height is at 1" 3/8 from the top of the barrel zero at 100yds.

When I shoot at 300yards I need to aim the second dot bellow at 24x. Considering ballistic coeficient and all the data I should have a drop of 14" at 300yrds how come I have only have 1" assuming I aim with the second dot so it would be 0,5" each for a total of 1"...
What did I understood wrong and missing?
Thanks in advance.
Grendeb
 
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wouldn't the 1" be at 100 yards so extrapolate it at 300 yards?

And consider its only 200 yards past 100 as a reference point.
 
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ShawnC6 said:
Uhm I don't think you mathed right. 14" drop for 300 yards sounds like a lot.

Edit: also wouldn't the 1" be at 100 yards? So 3" at 300 yards?

And consider its only 200 yards past 100 as a reference point.
Click to expand...

14" of drop at 300 seems about right to me.
 
Does your scope have a mil-dot retical?

If it does the spacing on Bushnell mil dots is 3.6" at 100 yards. (they are military mils and not true mils)

Second you need to know what power your retical is accurate at. It it is at 12 power then at 24 power you will have 1/2 mil spacing.

You shoot need about 4.5 MOA to get to 300 yards. So a little over a mil will work. Or at 24 power then a little more then 2 dots.
 
K0na_stinky said:
You have to aim below the target???

With a 100 yard zero your rifle is shooting over the targets at 300 so you need to aim under it?
Click to expand...

The center reticule (cross) is above the target i.e. Aim above the target and place the second dot on the target and I hit the target.
 
the issue might be in that you zeroed at 12x magnification and then aim at 300yds on 24x magnification
post here the caliber, muzzle velocity and the ballistic coefficient and I'll try to run the numbers for you on my reticle computer.

edit: zero distance too please
 
K0na_stinky said:
Does your scope have a mil-dot retical?

If it does the spacing on Bushnell mil dots is 3.6" at 100 yards. (they are military mils and not true mils)

Second you need to know what power your retical is accurate at. It it is at 12 power then at 24 power you will have 1/2 mil spacing.



You shoot need about 4.5 MOA to get to 300 yards. So a little over a mil will work. Or at 24 power then a little more then 2 dots.
Click to expand...

Correct me if I'm wrong but the turrets are in MOA so I would've assume the dots are in MOA as well not mils.
Yes it is as 12x that the reticules are accurate.
Considerong the results I got this would make a lot of sense! I shot at 24x to 300yds and landing the target when I aimed with the second dot bellow.
 
legi0n said:
the issue might be in that you zeroed at 12x magnification and then aim at 300yds on 24x magnification
post here the caliber, muzzle velocity and the ballistic coefficient and I'll try to run the numbers for you on my reticle computer.

edit: zero distance too please
Click to expand...


I zeroed my scope at 100 yards with 24x zoom to see the wholes properly.
308 win, MV 2820fts, BC 0.314.
Thanks
 
on Bushnell's website Elite Tactical ERS 6-24x 50mm shows the following reticles:Mil-Dot, Illum. Mil-Dot, G2 or Illum. BTR-Mil
G2 looks like this
reticle-g2dmr.png


Mil-Dot looks like this:
yhst-97257296864170_2268_135009830

BTR MIL:
BUSHNELL-Elite-Tactical-6-24x50-Riflescope-Illum-BTR-Mil-Reticle-FFP-ET6245FJ-Pic1.jpg

which one is in your scope?
 
Grendeb said:
Correct me if I'm wrong but the turrets are in MOA so I would've assume the dots are in MOA as well not mils.
Yes it is as 12x that the reticules are accurate.
Considerong the results I got this would make a lot of sense! I shot at 24x to 300yds and landing the target when I aimed with the second dot bellow.
Click to expand...

If your using the second dot below the cross hair then you would be holding over the target with the main cross hair.

I can't seem to find any info on the scope you have. Bushnell must have stopped making it.

That being said, I'm pretty sure your scope has a mil-dot retical. Do you have the manual for your scope?

The manual that came with my bushnell elite tactical 10x40 fixed says that the retical is accurate at 12 power.

So at 24 power each dot is 1/2 mil. Holding just over 2 dots would be around 4 moa and would be right for drop at 300 yards.
 
Why not zero the rifle and then dial up what ever drop you need with the turrets...if you're going to use the reticle then you have to use it on a set power. The mil dots represent mil dots (3.6" @ 100yds) when set at 12x with your scope.
 
One of the oddities of that scope is that the turrets are in MOA and the reticle is MIL. I have one but I make all my adjustments on the turrets and just hold center.
1 MIL = 3.6 inches at 100 yards
 
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Grendeb said:
When I shoot at 300yards I need to aim the second dot bellow at 24x. Considering ballistic coeficient and all the data I should have a drop of 14" at 300yrds how come I have only have 1" assuming I aim with the second dot so it would be 0,5" each for a total of 1"...
What did I understood wrong and missing?
Thanks in advance.
Grendeb
Click to expand...

Gerndeb - If there is a typo when you wrote second dot instead of first dot I think your scope and rifle are fine.

I think you are confusing mils with MOA and inches of drop. A mil is about 3.38 MOA and both are measurements of angle (e.g degrees) not of distance (e.g. Inches). The conversion of both mils and MOA will vary with the range at which you are shooting. 1 MOA is 1.0472" at 100 but at 300 yards it is 3.14". The inches to mils conversion is similar.

The conversion formula used for range estimation is (height x 1000)/mils= range, so if we want mils, mils = (height x 1000)/range. Since all distance units have to be the same, we'll use inches. So mils = (13" x 1000) /(300 yards x 36 inches/yd) = 1.2 mils, about one dot.

An easier but less accurate conversion is 13 inches/3.38 MOA per mil/3 (hundred of yards)= 1.3 mils, again about 1 dot.

If your holdover is really 2 mils then we've got other problems.
 
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Pr589 said:
Gerndeb - I think you are confusing mils with MOA and inches of drop. A mil is about 3.38 MOA and both are measurements of angle (e.g degrees) not of distance (e.g. Inches). The conversion of both mils and MOA will vary with the range at which you are shooting. 1 MOA is 1.0472" at 100 but at 300 yards it is 3.14". The inches to mils conversion is similar.

The conversion formula used for range estimation is (height x 1000)/mils= range, so if we want mils, mils = (height x 1000)/range.
Since all distance units have to be the same, we'll use inches. So mils = (13" x 1000) /(300 yards x 36 inches/yd) = 1.2 mils.

An easier but less accurate conversion is 13 inches/3.38 MOA per mil/3 (hundred of yards)= 1.3 mils.

I think your ballistics chart and your scope are pretty bang on.
Click to expand...

I think this is my problem I thought my scope was in moa so no wonder why I had crazy results still i need to study a bit more because I find this quite hard to understand and then make conversion to moa to adjust on my scope on the fly. Thanks
 
I just went and tested what we discussed, I made sure my scope was zeroed at 100 yards with 12x power.
So as the scope reticule is in MIL and apperently the turrets in MOA (still not sure about that) I tested out by adding 1 moa up (4clics) and ended up about 2'' above the center with 12X magnification (windy but pretty sure variation is on me, still learning).

Now I want to understand how to calculate so I can make adjustment on the scope and hit (in the ideal world) 1st time.
From previous calculation : 300 yards, drop of 14.7'' (1mil=3,6'') so 14,7/3,6= 4.08 mils. I dialed from 0 to 4 on my scope and ended up hitting the 13'' target when aiming right on it. Would that mean my turrets are in Mil also? I'm not sure if this makes sense since in this post someone said the reticule is in mil and turret in moa plus my test of adding 4 clics (1moa) the bullet landed closer to 1 moa (1'') than a mill (3,6'')...

So long story short I'm lost on how should I dial the turrets when I know the distance and drop.
Thanks for your patience in teaching a neebie
 
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