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
The Basics, Starting Out
Ladder testing
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="Chase723" data-source="post: 1589833" data-attributes="member: 21524"><p>I would go with the load that's in the middle of the velocity flat spot with the lowest ES if you're only using a chronograph. If your following Alex's regimen (which is probably the best way, where you combine both chronograph data and are able to see your aggregate POIs) you'll see a group where charge weights (say 68, 68.5, 69) all essentially group in the same spot at 600 yards. In that instance pick 68.5 because it's a stable node (will likely have the lowest ES) and there's 0.5gr leeway on either side. You'll be amazed. Sometimes, you find a node that will group 1/2 MOA over 0.6-1gr of powder. The middle of that is going to be rock solid in pretty much every condition.</p><p></p><p>If you choose the charge weight at a point where you have an increase in velocity that's an unstable area on the pressure/velocity curve.</p><p></p><p>A stiffer stock that free floats the barrel and has pillars installed (or an aluminum bedding block or mini chassis or a full chassis) and is bedded will help, especially at 100. That's the basis for an accurate rifle and is a must for getting reliable information from what you see downrange. But beyond that the muzzle velocity variation will rear its ugly head.</p></blockquote><p></p>
[QUOTE="Chase723, post: 1589833, member: 21524"] I would go with the load that’s in the middle of the velocity flat spot with the lowest ES if you’re only using a chronograph. If your following Alex’s regimen (which is probably the best way, where you combine both chronograph data and are able to see your aggregate POIs) you’ll see a group where charge weights (say 68, 68.5, 69) all essentially group in the same spot at 600 yards. In that instance pick 68.5 because it’s a stable node (will likely have the lowest ES) and there’s 0.5gr leeway on either side. You’ll be amazed. Sometimes, you find a node that will group 1/2 MOA over 0.6-1gr of powder. The middle of that is going to be rock solid in pretty much every condition. If you choose the charge weight at a point where you have an increase in velocity that’s an unstable area on the pressure/velocity curve. A stiffer stock that free floats the barrel and has pillars installed (or an aluminum bedding block or mini chassis or a full chassis) and is bedded will help, especially at 100. That’s the basis for an accurate rifle and is a must for getting reliable information from what you see downrange. But beyond that the muzzle velocity variation will rear its ugly head. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
The Basics, Starting Out
Ladder testing
Top