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
question about ladder test results
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="bruce_ventura" data-source="post: 1033098" data-attributes="member: 34084"><p><span style="font-family: 'Calibri'"><span style="font-size: 12px">Large dispersion is confounding your results. Look at the big picture. Here's what I see in your data:</span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px">1. Obvious left to right POI shift in three out of four strings. One string is inconclusive. </span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px">2. The low to high POI shift in one string is not supported by the other three strings. Disregard for now. </span></span></p><p></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px">Are you at the max recommended load or seeing pressure effects at 36.7 gr? If so, switch powders and run a new ladder. If not, explore a higher charge weight with Varget, but only if it is safe to do so. You are looking for the left to right POI shift to stop. That's where you will fix the charge weight and explore COAL dependence. </span></span></p><p> </p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px">The large dispersion may not be related to the load, but rather to something else about the gun. Have you shot match grade factory ammo through this gun and gotten smaller groups? If not, look for the usual culprits in the barrel condition, trigger and receiver fit to the stock. Some barrels shoot well clean, others dirty. This may not be a good bullet for this gun. Anything unusual about the brass or headspace? </span></span></p></blockquote><p></p>
[QUOTE="bruce_ventura, post: 1033098, member: 34084"] [FONT=Calibri][SIZE=3]Large dispersion is confounding your results. Look at the big picture. Here’s what I see in your data:[/SIZE][/FONT] [FONT=Calibri][SIZE=3]1. Obvious left to right POI shift in three out of four strings. One string is inconclusive. [/SIZE][/FONT] [FONT=Calibri][SIZE=3]2. The low to high POI shift in one string is not supported by the other three strings. Disregard for now. [/SIZE][/FONT] [FONT=Calibri][SIZE=3]Are you at the max recommended load or seeing pressure effects at 36.7 gr? If so, switch powders and run a new ladder. If not, explore a higher charge weight with Varget, but only if it is safe to do so. You are looking for the left to right POI shift to stop. That’s where you will fix the charge weight and explore COAL dependence. [/SIZE][/FONT] [FONT=Calibri][SIZE=3]The large dispersion may not be related to the load, but rather to something else about the gun. Have you shot match grade factory ammo through this gun and gotten smaller groups? If not, look for the usual culprits in the barrel condition, trigger and receiver fit to the stock. Some barrels shoot well clean, others dirty. This may not be a good bullet for this gun. Anything unusual about the brass or headspace? [/SIZE][/FONT] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
question about ladder test results
Top