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
Rifles, Reloading, Optics, Equipment
Reloading
Ladder Method for Best Load
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="mattj" data-source="post: 254910" data-attributes="member: 8758"><p>To OP: </p><p></p><p>For what it's worth, I haven't used the 'ladder' method, but I've had excellent luck with its cousin the OCW method: <a href="http://optimalchargeweight.embarqspace.com/" target="_blank">Dan Newberry's OCW Load Development System</a></p><p></p><p>I pick a known "good" powder/bullet/primer combo from research on forums like this, then:</p><p></p><p>Session one: I do OCW as described in the link -- 5 rounds each powder charge in a round-robin fashion. I use chrono information to help interpret what I see on target. I also find OnTarget software ( <a href="http://www.ontargetshooting.com/" target="_blank">On Target Precision Calculator</a> ) helpful -- usually I will dump the chrono information and the "center of the group" Y-axis measurement from point of aim into a spreadsheet and choose my 'winning' OCW charge based on the info there. It is pretty cool to graph the information -- when you let Excel interpolate curves between your data points, the sweet spots show up pretty clearly.</p><p></p><p>Session two: I shoot 5-shot groups in .005" seating depth increments, starting .020" from the lands, and ending touching the lands (assuming the load isn't right near the max). Like OCW, I shoot in a round-robin fashion. Unlike the OCW phase, here I'm looking for tightest group.</p><p></p><p>I could certainly add more steps here -- for example, doing another couple sessions where I refine the powder charge and seating depth down even further -- but so far the above sequence (takes ~50 rounds and two trips to the range) has not failed to give me consistent sub .5 MOA loads.</p><p></p><p>Matt</p></blockquote><p></p>
[QUOTE="mattj, post: 254910, member: 8758"] To OP: For what it's worth, I haven't used the 'ladder' method, but I've had excellent luck with its cousin the OCW method: [url=http://optimalchargeweight.embarqspace.com/]Dan Newberry's OCW Load Development System[/url] I pick a known "good" powder/bullet/primer combo from research on forums like this, then: Session one: I do OCW as described in the link -- 5 rounds each powder charge in a round-robin fashion. I use chrono information to help interpret what I see on target. I also find OnTarget software ( [url=http://www.ontargetshooting.com/]On Target Precision Calculator[/url] ) helpful -- usually I will dump the chrono information and the "center of the group" Y-axis measurement from point of aim into a spreadsheet and choose my 'winning' OCW charge based on the info there. It is pretty cool to graph the information -- when you let Excel interpolate curves between your data points, the sweet spots show up pretty clearly. Session two: I shoot 5-shot groups in .005" seating depth increments, starting .020" from the lands, and ending touching the lands (assuming the load isn't right near the max). Like OCW, I shoot in a round-robin fashion. Unlike the OCW phase, here I'm looking for tightest group. I could certainly add more steps here -- for example, doing another couple sessions where I refine the powder charge and seating depth down even further -- but so far the above sequence (takes ~50 rounds and two trips to the range) has not failed to give me consistent sub .5 MOA loads. Matt [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Ladder Method for Best Load
Top