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)
ERL Ballistics 'Truing' help
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="Eaglet" data-source="post: 669838" data-attributes="member: 3756"><p>My advice is like this:</p><p>If you're zeroed at 202 yd, place <strong>vertical</strong> targets at 500 yd, 800 yd and 1200 yd. Shoot at least 3 shot group to each after adjusting for vertical elevation</p><p>according to your program. Measure from the center of the group so see what </p><p>adjustment you'll need for each. Of course the 202 will not need adjustment.</p><p>Then, since you're pretty sure about your muzzle velocity, then make small adjustments</p><p>to the BC until it matches the values that it should have.</p><p>For example, let's say the program says for 1000 yd you need to go </p><p>up 23 MOA but the 3 carefully taken shots measure 9" high so...</p><p>9/1.047/10 = 0.8 MOA from center of the 3 carefully taken shots. Then you make</p><p>small adjustments until your app says 22.2 MOA up. Hopefully those small adjustments will allow you to get to a point very close to all distances being pretty</p><p>close.</p><p></p><p>Some folks are fully sold on Litz's G7 BC and they make adjustments on the muzzle velocity until you get as close of a match as possible. Others, adjust the BC</p><p>ad others adjust both which I don't think is such a good idea.</p><p></p><p>In any event you have a pretty good idea of how to go about it.</p><p></p><p>NOTE: I'm taking for granted that the rifle and the shooter are capable to hold small groups at all distances. <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="Eaglet, post: 669838, member: 3756"] My advice is like this: If you're zeroed at 202 yd, place [B]vertical[/B] targets at 500 yd, 800 yd and 1200 yd. Shoot at least 3 shot group to each after adjusting for vertical elevation according to your program. Measure from the center of the group so see what adjustment you'll need for each. Of course the 202 will not need adjustment. Then, since you're pretty sure about your muzzle velocity, then make small adjustments to the BC until it matches the values that it should have. For example, let's say the program says for 1000 yd you need to go up 23 MOA but the 3 carefully taken shots measure 9" high so... 9/1.047/10 = 0.8 MOA from center of the 3 carefully taken shots. Then you make small adjustments until your app says 22.2 MOA up. Hopefully those small adjustments will allow you to get to a point very close to all distances being pretty close. Some folks are fully sold on Litz's G7 BC and they make adjustments on the muzzle velocity until you get as close of a match as possible. Others, adjust the BC ad others adjust both which I don't think is such a good idea. In any event you have a pretty good idea of how to go about it. NOTE: I'm taking for granted that the rifle and the shooter are capable to hold small groups at all distances. :-) [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Extreme Long Range Hunting & Shooting (ELR)
ERL Ballistics 'Truing' help
Top