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
Is a scope level needed?
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="Pdvdh" data-source="post: 1014750" data-attributes="member: 4191"><p>I was inclined to go there. Michael already has.</p><p></p><p>Here's the tough way to learn the cause and effect of canted rifle POI error.</p><p></p><p>If you truly believe the only important factor for proper rifle position is to position the vertical cross hair parallel to the force of gravity, no matter the location of the rifle bore relative to the intersection of the cross hairs, then mount your scope so its windage turret is rotated to the location the elevation turret is supposed to be located. Now shoulder your rifle while laying on flat ground on your right shoulder. This will position the elevation turret pointing toward the sky, and the windage turret toward the horizon, from the scope tube. Shoot groups at 100, 400, and 800yds, adjusting your elevation and windage turrets to the dope values calculated from your ballistics program - with no correction entered into the ballistics program for this 90-degree rifle cant. See how this 90-degree rifle cant affects POI on your targets. Ensure you have a safe background, because you'll be skipping bullets into the wild blue yonder at 400 & 800yds.</p><p></p><p>After obtaining dismal results on target, realize that the closer you get your rifle set up to zero rifle cant from this 90-degree experimental cant, the closer you'll be to eliminating this source of error (rifle cant) on your POIs.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1014750, member: 4191"] I was inclined to go there. Michael already has. Here's the tough way to learn the cause and effect of canted rifle POI error. If you truly believe the only important factor for proper rifle position is to position the vertical cross hair parallel to the force of gravity, no matter the location of the rifle bore relative to the intersection of the cross hairs, then mount your scope so its windage turret is rotated to the location the elevation turret is supposed to be located. Now shoulder your rifle while laying on flat ground on your right shoulder. This will position the elevation turret pointing toward the sky, and the windage turret toward the horizon, from the scope tube. Shoot groups at 100, 400, and 800yds, adjusting your elevation and windage turrets to the dope values calculated from your ballistics program - with no correction entered into the ballistics program for this 90-degree rifle cant. See how this 90-degree rifle cant affects POI on your targets. Ensure you have a safe background, because you'll be skipping bullets into the wild blue yonder at 400 & 800yds. After obtaining dismal results on target, realize that the closer you get your rifle set up to zero rifle cant from this 90-degree experimental cant, the closer you'll be to eliminating this source of error (rifle cant) on your POIs. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
Is a scope level needed?
Top