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Leupold Question

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 18:37
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Guys im a new guy with little understanding of scopes so dont flame to much Howdy...    I hunt whitetail deer, elk in colorado, and like to varment hunt when get time!  So i just recently purchased a new .300 mag for my big game hunting and bought a VXIII 6.5-20X40 LONG RANGE....   Now i know that is a large power scope for such a large animal but i plan to use this scope on other rifles for varment hunting!  So now for my question, i recently had a VXII 4-12X40 adjustable object, now my question is with the new VXIII Long range scope, there isnt a adustable object at the end of the scope to adjust for yardage!  For instance on my other scope if i sighted the rifle in a 150 yds and i encountered a whitetail at 350 then all i had to do was turn the adjustable object and i was done!  But on the long range scopes there isnt a dial!  Now there is a side parallex adjustment but this is not what i need correct?   Remember im new to understand scopes and i am trying my ass off to learn so.........    thanks
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 19:01
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I know that the adjustable object, lets the scope be focus parallex free and any yardage, and where i get confused is now i dont have one so??????       Will i have to always be using the side parallex adjustment on high magnification shoots?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 19:24
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A side focus parallax adjustment is the same as a front objective parallax adjustment. Just at a different place on the scope, thats all, works the same.

   Focus
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 19:28
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Oh ok!  So there a bunch of marks and then a infinite mark, how do i know which marks represents what yardage??
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 19:37
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Well every scope I own has the side focus hash marks in yds. I guess leupold side focus scopes (I don't own any of them) don't give you yardage numbers to go by. That is the parallax adjustment so you would have to go by the focus at a given yardage and the lack of parallax. I'm sorry didn't realize that leupold side focus was more difficult for a shooter to adjust if they knew the yardage. Maybe some leupold user will chime in and tell you an easier way to utilize your side focus. conquests are marked in yardage.

   Focus
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 19:46
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Thanks for the replies, i am probably turned something simple into something difficult but just need someone to help me   haha

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:00
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 side parallex ad. (they really aren't focus ad. dispite the nomenclature) in any manufacturer.  If they correlate with any given range it is pure co-incidence. If this were the case all one would have to do would be to "focus" the scope and read off the range. Split prism range finders are available and the work in this manner and are expensive. Also there would be no need to have things such as mil-dots and laser rangefinders. The wider the scopes magnification range the more the need to "play" with the ao, since the range of adjustment is greater, as a 3.5x10 needs little adjustment. with the first leo it was necessary to start at infinity and dial back, with the new ones it isn't necessary.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:12
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So when you said the higher the magnification the need to adjust on the AO, but the scope doesnt have AO..   Its the LR version!   Thanks

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:15
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the dial or focus on the side is the ao
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:19
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Oh ok, there arent any numbers, just hash marks and an infinite sign..  How do you find out which marks are for what yardage?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:32
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excuse me if I have to chuckle, but please re-read my first post -- they cannot be used for yardage, - its only an approximation, probably something like plus or minus 50 yds.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:38
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Ok well not trying to be a smartass but this is a discussion forum so i am just asking questions trying to learn a little!  So if it is only an approximation then how are you supposed to adjust the scope for  longer shots when you have to, and knowing if you have it set for 400 or 500!   Thanks
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:43
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parallex and its offset are most important at closer ranges, when the parallel light rays impinging on the glass surface are further apart on the target object. at longer ranges it is not as much as a problem, and usually other sighting errors (a load errors) over ride this. Think of a railroad track disappearing in the horizon they look like they are joining at some point, and you have to remind yourself that they are still the same distance apart. Regardless of the distance, when the object is "in focus" by the ao. it will work the yardage is only significant to the ballistics of the load. The ao doesn't help in telling you the hold over.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 21:56
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Alright man i appreciate your help!  Thanks again!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 02:50
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Exactly as Dale says. With the other scopes that have the yardage marked and you dialed in say 150 yds ,and then looked at a target 150 yds away it would be more or less focussed. If you looked through the scoped and focussed it 100% and then looked at the yardage it would probably not be exactly on the 150 yds marking.

I have the Leupold side focus or Adj Parralax setting and it has markings to give an idea of near or far targets. You have to look through the scope and turn the side Adj Focus untill the target is in focus. You can allways do this at known distances and mark the scope yourself if it is important to you.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 07:17
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Quote That is the parallax adjustment so you would have to go by the focus at a given yardage and the lack of parallax.


Well it took a few posts to confirm but the focus advise was correct that I gave. However I have two AO scopes both marked out in yardage and both pretty much spot on for their markings. The 4200 dead on and a conquest off 20 or so yards at most. This would make me think leupold could do a much better job of giving a point to work from than just blank hash marks. At least when they are marked you have a place to at least start your focussing at. Something to consider when buying an AO scope I suppose.


Quote they cannot be used for yardage




I've heard the old "marks don't mean a thing and probably aren't correct" opinions before but in reality I would prefer either of my marked (and quite correctly I might add) scope AO dials to one with blank marks....In fact to advise the fella to figure it out on his own by testing for focus and than marking them himself with the yardage distances would completely contradict the above statement. Remember he doesn't have the experience with this that we do and as such it has to be explained correctly. Good Luck.....cds99..... leupold don't give you much to start with unfortunately.....

   Focus

Edited by Focus - December/31/2007 at 07:29
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 10:14
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Hello and welcome, cds99.  As Dale mentioned, sometimes the yardage marks are correct, and sometimes not, so I wouldn't trust those numbers and let your eyes tell you when the target and reticle is in proper focus.  To test for parallax, move your head from side to side while looking through the scope at a given object and turning the dial, making sure the rifle is as still as possible.  Slowly adjust the dial until the reticle appears to stay still no matter how you move your eye position relative to the scope.  When the reticle doesn't appear to shift off a precise point of aim as you move your head, it is properly focused to eliminate the effects of parallax.  Parallax is the condition where the reticle and the target are not on the same focal plane, which causes the reticle to appear to move off the target as you move your eye position.   If your scopes' parallax adjustments are correctly calibrated to the numbers, then consider yourself lucky.  All of my A/O & side focus equipped scopes that have yardages marked on the dials are not correct.  Some manufacturers just use tick marks and not actual yardage numbers for this reason.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 10:24
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I had a conquest 4.5x14x50 that was dead on with all the markings, (best part of the scope) as long as the focus was with my eyes, if someone else used it - the markings would be off (just plain lucky). To bad the rest of the scope wasn't up to snuff. In the days before laser rangefinders I used to mark the ao, but now one does just the work twice. As stated above if the side focus as a range finder there would be no need for the fine mil, moa, and distancing reticles today, let alone the $800 swaro rangefinders. The most difficulty in even beginning to use an ao or parallex adj. as a rangefinder, is when they fail the most, at the longer distances.

Edited by Dale Clifford - December/31/2007 at 10:25
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 10:52
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WHO said anything about using the AO as a rangefinder except you, Dale? If you know at what distances the AO will eliminate parallax you can set it to make shots already ranged with a rangefinder. Otherwise sitting and fiddling with the scope to see if the focus and parallax is eliminated before you make a shot with unmarked hash marks would be kinda slowwwww. Of course the AO would be off if you changed the diopter focus to someone elses vision. It changes the overall focus length just as AO does.....just in much tinier amounts. It would however change the AO settings for your eyes. Been checking and conquests, elites, and from what I've been told monarchs are all set in yds to give a basis point to begin to work from. Its not a bad thing at all.....fact it would have helped this poster a bunch no doubt. If I was shopping for an AO scope and the clerk handed me one with no yardage marks after owning several that work just fine with em' It would be me chuckling as I handed it back to him.......

Edited by Focus - December/31/2007 at 10:52
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 11:09
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if your mark says 150 yd and you are shooting at a 200 yd target and it is out of focus, except for the one target that is in focus at 150 you are using it as a rangefinder by default.

virtually all ao have a "depth of field" just like a camera lens, and as before the marks do give a jumping off point, but then so does just throwing a shot at the target to determine hold over.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 12:05
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Its funny but before I sold all my leupolds I could have sworn the 4.5x14 AO on the objective had yd markings.....guess if thats right they didn't carry that over to the side focus. I think the fella posting just wanted to know how to set his AO for shooting at a distance, guess he'll have to sort it out and mark his AO knob like mine are. Don't think ranging was the intent, maybe by default....but not the intent. Well cds99....get yourself a silver sharpie and mark it for yds.

   Focus
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 12:06
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i know all the old m8's my grand dad has had yardages clearly marked on the bell and depending on the magnification the numbers were different
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/01/2008 at 12:07
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the older varis do have the markings on the ao ring, but they are not accurate, and the thread pitch is different bettween the ranges. the 3.5 x10 even when set on 350 yds gives focus for 200 yds out to 600, making it a good ao for hunting, don't have to change it, but still works for 22lr. on close, down to 40 yds.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/01/2008 at 15:47
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Originally posted by Focus Focus wrote:

Its funny but before I sold all my leupolds I could have sworn the 4.5x14 AO on the objective had yd markings.....guess if thats right they didn't carry that over to the side focus. I think the fella posting just wanted to know how to set his AO for shooting at a distance, guess he'll have to sort it out and mark his AO knob like mine are. Don't think ranging was the intent, maybe by default....but not the intent. Well cds99....get yourself a silver sharpie and mark it for yds.

   Focus
 
 
Yes Focus you are right, i have a 4.5-14X40 that has yardage marked on the AO dial, and that is what my problem is on the LR scope there isnt a AO knob, just parallex adjustment and marks and a infinite sign!  Whatever people say about the AO dial and the yardage on them not being correct, but i dont see why Leupold would put it on there if it wasnt a help and wasnt accurate!  Now i know that pretty much all it does is when you turn the dial, is lets you sorta set the yardage on the scope and LETS THE SCOPE BE PARALLEX FREE up to that point stated by Leupold!  Now i know that the scope doesnt know if it is on a .300 mag, and i am getting ready to take a shot at 600yds and it is going to have a bullet drop of approx. 30 inches or a 22-250 at 200 yards with a lot less bullet drop!!!  I know that you cant just turn a dial and the scope be in sink!  But i do however think that  Leupold puts an AO on the scope for some reason, but if yardage is not it then why in the hell does it have yardage marks and what is the things purpose!     And just to clear another think up, so most everyone here is stating no matter the yardage shot i am shooting at, versus if i set the gun at 200 yds, and i am in the field an am forced to take a shot at 425, then i just need to focus on the object, and adjust my side parallex adjustment knob????    Please ellaborate
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/01/2008 at 16:35
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I may be reading your posts wrong, but it seems like you are confused about what parallax adjusment really is.  Adjusting your parallax has absolutely nothing to do with compensating for bullet drop in any way, shape or form.  Read this post about parallax.

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