Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Hunting
Long Range Hunting & Shooting
How critical is scope level?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="DavidleeCole" data-source="post: 1548676" data-attributes="member: 85306"><p>1 degree is equal to 60moa or 17.4533 mils. If you dial elevation, wind, spin and coriolis and hold the point of aim center. You will have a shift of impact due to elevation travel up and going slightly to right or left respectively. So the impact will be right or left of the point of aim. However if you use the recital for wind or lead hold off's the cant you induced when mounting your optic and or level will have a impact shift that will be exacerbated by the amount of hold off that is applied. In example if you had 1 degree of cant in your rectical and used 2 mills hold off it would give a point of impact shift of 2 mils by 1 degree at said range. This would include both elevation and a lateral point of impact shift. So if the rectical is 1 degree left of plumb and left wind hold is applied then point of impact will be low and left of the point of aim because the right side of the rectical is high of true level. This is why I get a fell for my rifle and see that when I put a level in the action the butt stock fells good to me then I mount my scope level to that so my natural shoulder pocket is included and I will not twerk my rifle latter. After that is set I hang a rope with a weight to the end of it for a plumb at 100 yards and check my rectical is set plumb and then set my anti-cant level to that plumb line. Next I will set up a tall target at 100 yards truly measured with a 48" long line set vertically plum with a 24" horizontal line 10" from the bottom set level. This forms a big cross hair to aim at. The most important part of this whole process is attention to detail of plumb, level, range and all measurements . Next shoot a group at the center point of the crosshair and verify zero then run your elevation up by 30 MOA or 10 mills and shoot another group still aiming at the center or the crosshair target. Most important part to this is a good slow well aimed group. Now if any cant exist in you system it can be accounted for and taken out of the equation by correcting you ballistic chart for cant errors and or elevation correction factor. You can also come back to zero and dial 15 Moa or 5 mills right and then left sti shootig at center and get correction factors there as well for windage this is a box test. Please read Brain Litz work in applied ballistics to get all the formulas to lengthy to put here or watch Rex on Snipper 101for all the info you need and more.</p></blockquote><p></p>
[QUOTE="DavidleeCole, post: 1548676, member: 85306"] 1 degree is equal to 60moa or 17.4533 mils. If you dial elevation, wind, spin and coriolis and hold the point of aim center. You will have a shift of impact due to elevation travel up and going slightly to right or left respectively. So the impact will be right or left of the point of aim. However if you use the recital for wind or lead hold off's the cant you induced when mounting your optic and or level will have a impact shift that will be exacerbated by the amount of hold off that is applied. In example if you had 1 degree of cant in your rectical and used 2 mills hold off it would give a point of impact shift of 2 mils by 1 degree at said range. This would include both elevation and a lateral point of impact shift. So if the rectical is 1 degree left of plumb and left wind hold is applied then point of impact will be low and left of the point of aim because the right side of the rectical is high of true level. This is why I get a fell for my rifle and see that when I put a level in the action the butt stock fells good to me then I mount my scope level to that so my natural shoulder pocket is included and I will not twerk my rifle latter. After that is set I hang a rope with a weight to the end of it for a plumb at 100 yards and check my rectical is set plumb and then set my anti-cant level to that plumb line. Next I will set up a tall target at 100 yards truly measured with a 48" long line set vertically plum with a 24" horizontal line 10" from the bottom set level. This forms a big cross hair to aim at. The most important part of this whole process is attention to detail of plumb, level, range and all measurements . Next shoot a group at the center point of the crosshair and verify zero then run your elevation up by 30 MOA or 10 mills and shoot another group still aiming at the center or the crosshair target. Most important part to this is a good slow well aimed group. Now if any cant exist in you system it can be accounted for and taken out of the equation by correcting you ballistic chart for cant errors and or elevation correction factor. You can also come back to zero and dial 15 Moa or 5 mills right and then left sti shootig at center and get correction factors there as well for windage this is a box test. Please read Brain Litz work in applied ballistics to get all the formulas to lengthy to put here or watch Rex on Snipper 101for all the info you need and more. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
How critical is scope level?
Top