How to use your scope

[Religious Shooter]

Looks good.

[Religious Shooter]

Originally Posted by JT1989

He said that the bullet drops as soon as it leaves the barrel. That's true, if the barrels pointed level.

Which is why he added, that we must aim UP in order for it to hit where we want. If he worded it your way he would sound like he's trying to be overly complex and pretentious.

[CRTguns]

I'm going to print this out and hand them out to customers. It will save time at the shop.

You'd be amazed at how many people really haveno idea about how to use a scope- they don't know how to sight the thing in- they don't know where to put their head- I may as well be speaking japanese.

[trg-s338]

This information is excellent! I have read extensively on the theoretical aspects of this topic but your perspective on the practical application and use has widened my understanding of the subject even more. I've also read your other informative topics like competitive shooting for beginners, ect. I keep a particular eye out for your posts. I'm new to this, so thanks a lot for sharing what you know.

[POLICESTATE]

tagged

[Navyguy0023]

Great explanation of Parallax, thanks!

[smilee]

thanks for the info. it was great reading.

[Sikhawk]

Very helpful info, thank you so much. He should be unbanned, he does so much for us even though his attitude isn't the best.

[UBFRAGD]

Originally Posted by Religious Shooter

That bugs me.

If you have the barrel pointed up, the bullet doesn't drop until it passes the apex.

Or you could say, gravity starts acting on the flight of the bullet as soon as it leaves the barrel.

Great thread!!

[ArkinDomino]

Amazing load of info.

[Shoobee]

Nice write-up so far. Thanks for the hard work.

Eventually I will print all this and put it into my data book.

Good job, sniper.

[codplayer]

Excellent info.. Thanks!

[c-wick]

tagged. good stuff!

[Onetyme]

Great info. Points me in the right direction.

[04_e46]

this is just what I was looking for!!!

[bubbapug1]

Originally Posted by Religious Shooter

That bugs me.

If you have the barrel pointed up, the bullet doesn't drop until it passes the apex.

All that good free work and someone always has to nit pick to try to prove he's smarter than the OP....and they always fail.

[SacramentoTDI]

Nice

[Mark94066]

I saw a post in a 45/70 forum and they recommended sighting in the weapon at 150 yards. They referenced the bullet trajectory dope at http://www.chuckhawks.com/rifle_trajectory_table.htm that puts the MPBR (maximum point blank range) at 131 to 174 yards (and 150 yards being the median).

I am assuming much of the information you have written here is directly applicable to guns sighted in at 100 yards. How would it change (if at all) for a gun sighted in at 150 or say 300 yards (for a 300WinMag).

What do you see as the value of sighting in at or very near the MPBR?

~Mark in San Bruno

[kaboom]

Nice write up. Thanks.

[codplayer]

Great stuff!

[SoCal Gunner]

Very interesting and much appreciated write up; tagging this for future reference.

[kanishinai]

tagged to read more later...good stuff from what i have read so far.

[LBDamned]

WoW lot's a great info...

Thanks for the write-ups... I need to take some time to sit and concentrate on it all...

I'm starting to realize there is a shytload to learn about long distance shooting! I'm still studying proper scope mounting (It's a far cry from slapping an optic on an AR).

Getting into the real subject matter is going to be like school all over again

[steve91104]

[Horton Fenty]

Originally Posted by djandj

See - this is why I don't do long range shooting. It's really more math than anything else. (I hate math).

Why can't we design a self adjusting scope with a built in range finder. So when I put the cross hairs on a target at 50 yards it adjusts to compensate and when I put them on a target at 100 and readjusts.

My $2.00 calculator can do scientific calculations, but my $1,000.00 scope needs a $2.00 calculator to hit anything (lol)

It's some easy math. Once you understand the concepts, see it explained a few different ways, and use it in practice a few times it becomes pretty simple.

Originally Posted by ar15barrels

Nope.
I'm just trying to explain things in plainer language than some of the books I have read.

Nice work. How about expanding the zeroing section to include alternate methods. Like zeroing for point blank range, or zeroing the top stadia line at 100 with a mildot reticle.

Originally Posted by Mark94066

What do you see as the value of sighting in at or very near the MPBR?

Maximum point blank range will be defined as a cartridges ability to hit an X sized target with a center hold out to X distance. Lets take a 243 as an example with a 70gr Sierra Matchking doing 3100 fps. Point blank range on an 8" target is 320 yards, zero should be set to 275 yards. Bullet path never goes 4" above, or below, your line of sight. For an 18" target it would be 432 yards, zero should be set at 370 yards.

[ar15barrels]

Originally Posted by Horton Fenty

Nice work. How about expanding the zeroing section to include alternate methods. Like zeroing for point blank range, or zeroing the top stadia line at 100 with a mildot reticle.

I disagree with the concept of "point blank range" and choose not to accept a known error in bullet placement.

I have the ability to dial my scope's knobs or hold off with my scope's reticle for a specific distance so I do that to place my bullets as precisely as possible.

Most people prefer a reticle-centric zero.
It makes for an easier aiming as your eye tries to center things without you even conciously thinking about it.
Also, when you shift your zero away from center, you get larger aiming errors from canting the scope than when you use a reticle-centric zero for the range you are shooting at.

[Horton Fenty]

Originally Posted by ar15barrels

I disagree with the concept of "point blank range" and choose not to accept a known error in bullet placement.

I think moving your zero out farther is a great option especially for a hunter. You know you can take a snap shot on a deer out to 300 yards and you'll hit. It's not accepting a know error, it's accepting a know flight path.

Originally Posted by ar15barrels

I have the ability to dial my scope's knobs or hold off with my scope's reticle for a specific distance so I do that to place my bullets as precisely as possible.

Of course you do, if you have a scope like that.

Originally Posted by ar15barrels

Most people prefer a reticle-centric zero.
It makes for an easier aiming as your eye tries to center things without you even conciously thinking about it.
Also, when you shift your zero away from center, you get larger aiming errors from canting the scope than when you use a reticle-centric zero for the range you are shooting at.

You lost me here. If your saying most people prefer to aim with the center I agree.

[pdq_wizzard]

Tagged

[ar15barrels]

Originally Posted by Horton Fenty

Of course you do, if you have a scope like that.

I would not have it any other way.

Originally Posted by Horton Fenty

You lost me here.

It's more than just a "preference".
It's brain wiring.
Your brain aligns things in centric circles without concious effort.

That's also why target/peep sights work so well with round targets.

[freonr22]

Originally Posted by ar15barrels

First off, most scopes are not centered or don't meet their advertised specs.
Leave yourself about 20moa at the bottom of the elevation travel to account for this.

Also, the optics are best in the middle so placing your 100yd zero at the extreme end of elevation travel means you are using the worst part of the glass at 100yds and again at 1300yds.
If you are only shooting at 600-1000yds, that will get you better image quality as you will be much closer to the center of the scope at those distances.

If you used up ALL of your usable elevation, you would not have any windage travel and it's often necessary to use some windage to get zeroed.
This windage eats up elevation travel at both ends of the elevation range due to the scope being round.
If you had a square scope, then the windage and elevation travels would not limit each other.

In your case, only having 45moa from center and using 5moa to get zeroed leaves you 40/50.
Then you are taking 20moa with the mount so you are at 60/30.
You could put another 10moa in the rings and be OK at 70/20.

So, Randall, this thread is 1688 days old. You posted the above comment on the Ruger thread.

Any thoughts to expanding this process ^^ in the context of "how to use your scope" ?

[Calico1404]

Can not wait to apply this tracking test. Excellent, and gives you times learning your MOA or MIL adjustments and handling.

[ar15barrels]

Originally Posted by freonr22

So, Randall, this thread is 1688 days old. You posted the above comment on the Ruger thread.

Any thoughts to expanding this process ^^ in the context of "how to use your scope" ?

Lesson to be learned is to just use a 20moa scope base and a good scope.
No need to worry about fine tuning the elevation because a 20moa base will keep you in the sweet spot of the scope if you have a quality scope with the necessary elevation travel.

[LBDamned]

Originally Posted by sfarchitect

I have a better command of the English language than most people

Is this a joke?

[kcheung2]

Originally Posted by sfarchitect

Language is a tool. Like any other tool, there are people who use it competently, and people who use it skillfully. Then there are those who should know better than to try to use it at all.

In answer to your question; No sir, you are.

Watch out! He uses language like a TOOL.

[LBDamned]

Originally Posted by sfarchitect

Language is a tool. Like any other tool, there are people who use it competently, and people who use it skillfully. Then there are those who should know better than to try to use it at all.

In answer to your question; No sir, you are.

Your response speaks volumes. Your false sense of being special is amusing.

[Bobby Ricigliano]

Originally Posted by sfarchitect

I have a better command of the English language than most people, nicely done sir.

A pronouncement of grammar superiority in the form of a run-on sentence.

Brilliant...

I love the smell of pseudointellectualism in the morning.

[Deog]

Thumbs up

[Wyseguy]

Tagged

[seansmd]

What are the recommendations for zero'ing windage if you are doing it outside with wind?

For example if you are zeroing with a 4mph wind from the 9'o clock, do you zero this out or set for zero wind and confirm with hold over.