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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Thumbs down on Leupold MK 4
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<blockquote data-quote="J E Custom" data-source="post: 363815" data-attributes="member: 2736"><p>Even though this post started out being a personal choice post , it has grown into</p><p>a fairly good debate.</p><p></p><p>But it does bring up an interesting question .</p><p></p><p>I know that most will say that they know how to adjust a scope properly but it appears </p><p>that some do not, so I will make an attempt to explain how. and if there is a real scope </p><p>expert member or sponsor I would appreciate there chiming in.</p><p></p><p>First there are different methods of adjusting a scope properly depending on the type,</p><p>power,maker/brand and distance.</p><p></p><p>There are three things that I consider important.</p><p></p><p>1= ocular focus. This has to be set right, or the cross hairs will be blurred .So I adjust this first</p><p>buy looking through the scope in the normal shooting position and starting with the adjustment</p><p>all the way in and slowly turning it outward focusing on the cross hairs, they will appear to be</p><p>double until they are focused and then they will become very clear and crisp. some times you </p><p>have to go past to go out of focus and then return to center, before you except this as correct</p><p>close your shooting eye for a second then open it and see if it is still in focus,(The human eye</p><p>is a marvelous thing and it can do the correction for you if you allow it to) so by closing it and</p><p>then re opening it you will get a good setting. after this is done I place a small mark with a</p><p>permanent marker on the two mating surfaces for later adjustments if it is moved buy accident.</p><p></p><p>Now the next thing is to find out if your scope has parallax.</p><p>The way to do this is to set the scope on a rest or sand bags and look at a target 200 yards </p><p>or more. with out touching the rifle place your head in the shooting position and while looking</p><p>at the target through the scope move your head up and down slightly (Bobble) .If the cross hairs</p><p>move up and down you have parallax. (Normally fixed power scopes below 9 power don't have </p><p>very much or none ) that's why lower power scopes don't have objective lens with parallax</p><p>adjustments. If you do have an adjustment and you do see the cross hairs moving when you</p><p>move your head then adjust the objective parallax untill it does not move. (Some/most will have</p><p>yardage numbers on them ) "DO NOT GO BY THESE" remove the parallax first and then you can</p><p>check the yardage because these numbers can be off just enough to add parallax back in the</p><p>scope. Note Parallax will/can ruin a good group and a good shot . I have seen scopes with 2 </p><p>and 3 MOA of parallax at 100 yards so the 1/2 MOA rifle may become a 3 MOA rifle because of </p><p>parallax.</p><p></p><p>Some of the newest scopes have a side focus and an ocular lens focus . the side focus is a way</p><p>of removing parallax and doing a fair job of range focus at the same time. again dont worry</p><p>about the numbers just get the clearest picture.</p><p></p><p>All scopes are not created equal so the adjustments are/may be different so read the</p><p>instructions (Something I have a hard time doing) in order to get the best results from</p><p>your scope.</p><p></p><p>Try adjusting your scope and maybe this will put new life in that old scope and those tired old</p><p>eyes.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 363815, member: 2736"] Even though this post started out being a personal choice post , it has grown into a fairly good debate. But it does bring up an interesting question . I know that most will say that they know how to adjust a scope properly but it appears that some do not, so I will make an attempt to explain how. and if there is a real scope expert member or sponsor I would appreciate there chiming in. First there are different methods of adjusting a scope properly depending on the type, power,maker/brand and distance. There are three things that I consider important. 1= ocular focus. This has to be set right, or the cross hairs will be blurred .So I adjust this first buy looking through the scope in the normal shooting position and starting with the adjustment all the way in and slowly turning it outward focusing on the cross hairs, they will appear to be double until they are focused and then they will become very clear and crisp. some times you have to go past to go out of focus and then return to center, before you except this as correct close your shooting eye for a second then open it and see if it is still in focus,(The human eye is a marvelous thing and it can do the correction for you if you allow it to) so by closing it and then re opening it you will get a good setting. after this is done I place a small mark with a permanent marker on the two mating surfaces for later adjustments if it is moved buy accident. Now the next thing is to find out if your scope has parallax. The way to do this is to set the scope on a rest or sand bags and look at a target 200 yards or more. with out touching the rifle place your head in the shooting position and while looking at the target through the scope move your head up and down slightly (Bobble) .If the cross hairs move up and down you have parallax. (Normally fixed power scopes below 9 power don't have very much or none ) that's why lower power scopes don't have objective lens with parallax adjustments. If you do have an adjustment and you do see the cross hairs moving when you move your head then adjust the objective parallax untill it does not move. (Some/most will have yardage numbers on them ) "DO NOT GO BY THESE" remove the parallax first and then you can check the yardage because these numbers can be off just enough to add parallax back in the scope. Note Parallax will/can ruin a good group and a good shot . I have seen scopes with 2 and 3 MOA of parallax at 100 yards so the 1/2 MOA rifle may become a 3 MOA rifle because of parallax. Some of the newest scopes have a side focus and an ocular lens focus . the side focus is a way of removing parallax and doing a fair job of range focus at the same time. again dont worry about the numbers just get the clearest picture. All scopes are not created equal so the adjustments are/may be different so read the instructions (Something I have a hard time doing) in order to get the best results from your scope. Try adjusting your scope and maybe this will put new life in that old scope and those tired old eyes. J E CUSTOM [/QUOTE]
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