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
Extreme Long Range Hunting & Shooting (ELR)
Stupid little things that effect ELR
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="paphil" data-source="post: 646159" data-attributes="member: 17745"><p>I could not agree more! I have a chart printed up that runs out to 2000 yards for my 7mm. We preach and teach all the time about there being little difference at 500 yards and 1/2 click at 750 (1.25 inches) and 1 click at 1000 (3.75 inches) for each 1000 feet or 20 degrees temperature change. (1/3 moa clicks, VLD bullet) We don't even worry about the barometric pressure! Now when we go to 1500 yards, that 20 degrees/1000 feet now becomes almost 19 inches and at 2000 yards we jump to 61 inches! so at 2000 yards only 1 degree temperature change causes about 3 inches up or down POI! Each 100 feet of elevation causes about 6 inches of vertical POI change. One half point barometric pressure change 29.5 to 30 will move POI about 30 inches vertically! Add in spin drift and earth rotation and it seems nearly impossible to hit anything at 2000 yards. The larger calibers and higher bc bullets will help some but all these things still have an effect as well as the powder and components! I'll stick to teaching 1000 and less where there is lots more room for error!<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="paphil, post: 646159, member: 17745"] I could not agree more! I have a chart printed up that runs out to 2000 yards for my 7mm. We preach and teach all the time about there being little difference at 500 yards and 1/2 click at 750 (1.25 inches) and 1 click at 1000 (3.75 inches) for each 1000 feet or 20 degrees temperature change. (1/3 moa clicks, VLD bullet) We don't even worry about the barometric pressure! Now when we go to 1500 yards, that 20 degrees/1000 feet now becomes almost 19 inches and at 2000 yards we jump to 61 inches! so at 2000 yards only 1 degree temperature change causes about 3 inches up or down POI! Each 100 feet of elevation causes about 6 inches of vertical POI change. One half point barometric pressure change 29.5 to 30 will move POI about 30 inches vertically! Add in spin drift and earth rotation and it seems nearly impossible to hit anything at 2000 yards. The larger calibers and higher bc bullets will help some but all these things still have an effect as well as the powder and components! I'll stick to teaching 1000 and less where there is lots more room for error!:) [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Extreme Long Range Hunting & Shooting (ELR)
Stupid little things that effect ELR
Top