Rifle Scopes Scope Click Adjustment Formula

[barrett50]

Hello All - I have been thinking about getting into long range precision shooting lately and have spent some time thinking about how to make adjustments to my scope, after the first shot, when shooting at targets at certain ranges. I know I'm probably not the first person to come up with this, but I thought of a formula to help me make these click estimates. I figured this would be a good way to start and then, after some practice and more practice, I would eventually be able to make estimates before my first shot.

I just wanted to run this by some of you more experienced folks to see if I'm on the right track here and if the formula is accurate. From what I understand, one of the most important aspects of long shooting is knowing exactly what impact making any adjustments to your scope will have on your shot. You can then adjust accordingly.

Here is the formula (I have a 1/4 moa scope):
<span style="font-weight: bold">(Inches off Target) / 1c</span>

1C (1click) = X moa @ specified Distance

<span style="font-weight: bold">**Basically you must know what the impact of ONE click will be at any specified range**</span>

For 1/4 moa scope:

X =

.25 @ 100
.50 @ 200
.75 @ 300
1.0 @ 400
1.25 @ 500
1.50 @ 600
1.75 @ 700
2.00 @ 800
2.25 @ 900
2.50 @ 1000

Example:

You are off 1 inch to the left @ 100 yards.

1/.25 = 4

You would need to make 4 clicks to adjust point of impact 1 inch.


Another Example:

You are off 7 inches to the right @ 500 yards.

7/1.25 = 5.6

You would need to make 6(rounded up) clicks to adjust the point of impact 7 inches.


OK - Now, here's another formula. This one is for whatever distance. (Again, I'm using a 1/4 moa scope)

<span style="font-weight: bold">Inches off Target/((distance*.25)/100)</span>

Example:

You're shooting at 461 yards. You shoot 8 inches off target. SO

461*.25 = 115.25

115.25/100 = 1.1525

Then

8/1.1525 = 6.9414

So it would take 7 clicks to move the point of impact 8 inches @ 461 yards.

 

[Swan]

Re: Scope Click Adjustment Formula

Here is an even better "formula" for you to consider:

Thinking in Clicks (T_c) + Time Wasted Thinking in Clicks (TWT_c) =
Complete Waste of Fuc*ing Time (CWoFT)



edit: shoot... in case of miss... use reticle... shoot again.

 

[Redmanss]

Re: Scope Click Adjustment Formula

Swan's formula is much more accurate.

 

[barrett50]

Re: Scope Click Adjustment Formula

Really? Seems more like a waste of ammo than more accurate.

But what do I know? I'm just a newbie.

So I really don't need a fine scope with precision adjustment. Good to know.

 

[Redmanss]

Re: Scope Click Adjustment Formula

You're looking at it the wrong way. Don't waste your time counting clicks. A mil/moa reticle is a ruler that tells you exactly what your adjustment needs to be. Apply to your hold or settings and you're on target.

 

[barrett50]

Re: Scope Click Adjustment Formula

OK, Thanks.

So really what I'm hearing is that the process of "holding over" or using "Kentucky Windage" is better than "dialing in" - assuming I have a precision reticle.

 

[tt350z]

Re: Scope Click Adjustment Formula

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: barrett50</div><div class="ubbcode-body">OK, Thanks.

So really what I'm hearing is that the process of "holding over" or using "Kentucky Windage" is better than "dialing in" - assuming I have a precision reticle.
</div></div>

To some extent.

Here's an example of what they are trying to get at.

Assuming you have a matching reticle/knob and is on the correct power for the subtension to be correct or a FFP scope

Say you are prairie dog hunting. You determine the range is 537 yards. After firing you noticed that your round impacted 5.5 moa left. Now you can try to do all that math to determine how many inches you missed (i dont know what 5.5 moa @ 537 yards is nor care to find out) by and than convert that to clicks or you can skip all that math and either dial in the 5.5 moa (thats why the knobs have numbers on them) or hold over 5.5 moa in the reticle.

Personally, I dont care how many inches I miss by. as long as the follow up shot is correct after reading the reticle I'm happy.

 

[KeithR41]

Re: Scope Click Adjustment Formula

That's not what he's saying at all. Here;

1 moa = 1.034 inches at 100 yds ( just use 1 inch.)
2 moa = 2 in at 200 yes
3 moa = 3 in at 300
So on and so on forever and ever amen.

On your scope there are 4 "clicks" per moa. Each moa is marked by a number 1,2,3,4,5, etc.

If you need 2.5 moa to get to 200 yds, look at your handy little adjustable turret and dial 2.5 moa.

Never say the word clicks again. Ever...............ever. completely useless!

Savvy?

41

 

[Outback]

Re: Scope Click Adjustment Formula

Just go mil /mil its less confusing

 

[RobertB]

Re: Scope Click Adjustment Formula

Mil/mil is less confusing in a way, BUT, since MOA is so closly related to inches at 100 yds too many people try to blend them together. If you shoot Mill/Mill or MOA/MOA and you just go off of your reticle you will be fine. Thats why you want your reticle to match your turrets. When you see your impact, just hold or dial what you see in your reticle. Its that easy. The only time I think clicks is when it's one or two, Past that I'm thinking MOA, not clicks inches or anyhing else. This way your range has nothing to do with anything. If your shooting 500 yds and you hit 1 moa low just dial or hold 1 moa. If your shooting at 1000 yds then its the same thing. 1 MOA low hold 1 MOA high. Too much math means too much wasted time, and as we all know time is money. Haha. good luck

 

[427Cobra]

Re: Scope Click Adjustment Formula

B50 stop thinking in inches, and start thinking in angular measurements, ideal scope has knobs that match the reticle, after a shot and a miss, the reticle will tell you what your correction is, whatever you do, DO NOT COUNT CLICKS. And don't be such a f-ing noob and complete your profile, somebody lives close to you and will help you get going, not only will you learn something but you might gain a friend.

Read Fredo post
http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1851301#Post1851301

 

[barrett50]

Re: Scope Click Adjustment Formula

Thanks guys for all the info. I think I understand what everyone is saying now. I was thinking about it too much! And obviously it shows my experience lvl is low. It's amazing though how much insight you can gain and how the way you look at things can change within a couple hours.

If I'm looking at a target @ 300 yards and shoot off target, I use my handy reticle to show me how many moa I'm off. Then I can hold over to adjust my next shot or dial in if wanted.

Cobra - thx for posting that link, I will def look at it. And I'll also try to stop acting like a noob!

 

[427Cobra]

Re: Scope Click Adjustment Formula

Sorry brother I can't help myself, your gonna find out that every scope maker in the world makes a MRAD reticle scope and most also have .1MRAD knobs, and every scope you come across with MOA reticle each manufacture has a reticle of there own design, some are TMOA, some are SMOA, and even mismarked IPHY, so MILS are pretty much universal, and MOA is not, I suggest a MIL\MIL scope, and no Mils are not metric.

 

[shootist2004]

Re: Scope Click Adjustment Formula

Someone already patented your formula.....

http://www.mildotmaster.com/testdrive.htm

(Swan you're too funny)
gary