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
brass weight sorting
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="nheninge" data-source="post: 560247" data-attributes="member: 13085"><p>A study of my chronograph data examining the effects of capacity and weight on velocity:</p><p></p><p>Holding all other variables approximately equal (primer, seating depth etc), case weight only explained about 30-35% of the variation when examining velocity differences across the chronograph, while capacity is roughly 70%. I have established this statistically by regression analysis in different trials, but this depends on the method used to determine case capacity, and type of brass. The two variables are definitely related (somewhat linearly), but only to a point. </p><p></p><p>Measuring water capacity on flr brass is not sufficient. Re-read the posts above by mikecr. Short version... accurate case capacity measurements are likely to shrink ES/SD more than case weight. Both methods are effective at reducing chrony spreads. </p><p></p><p>Determine what matters most (time vs accuracy) and make your call. Learn to read the wind and you'll make more kills than with either method combined</p></blockquote><p></p>
[QUOTE="nheninge, post: 560247, member: 13085"] A study of my chronograph data examining the effects of capacity and weight on velocity: Holding all other variables approximately equal (primer, seating depth etc), case weight only explained about 30-35% of the variation when examining velocity differences across the chronograph, while capacity is roughly 70%. I have established this statistically by regression analysis in different trials, but this depends on the method used to determine case capacity, and type of brass. The two variables are definitely related (somewhat linearly), but only to a point. Measuring water capacity on flr brass is not sufficient. Re-read the posts above by mikecr. Short version... accurate case capacity measurements are likely to shrink ES/SD more than case weight. Both methods are effective at reducing chrony spreads. Determine what matters most (time vs accuracy) and make your call. Learn to read the wind and you'll make more kills than with either method combined [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
brass weight sorting
Top