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Rifles, Reloading, Optics, Equipment
Reloading
The first sign of excessive pressure is...
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<blockquote data-quote="AJ Peacock" data-source="post: 285099" data-attributes="member: 4885"><p>Jim,</p><p></p><p>In the past, I also used visual inpection of the brass, case head measurement and bolt lift/extraction as pressure signs. A couple years ago, I read an article about pressure and it changed my entire perspective on pressure/velocity and pressure signs. The author shows that from a statistical perspective, throwing a dart at a wall is about as good to indicate pressure as case head expansion is.</p><p></p><p>Here is a link to the paper. </p><p><a href="http://www.shootingsoftware.com/ftp/dbramwell%20july%2019%2004.pdf" target="_blank">http://www.shootingsoftware.com/ftp/...%2019%2004.pdf</a></p><p></p><p>I still monitor my brass and extraction, but I rely more on velocity. As long as I'm using an appropriate powder/bullet combination for the rifle, with published loads to compare velocities with; I trust the velocity I'm getting is a very good indicator that I am in a safe zone.</p></blockquote><p></p>
[QUOTE="AJ Peacock, post: 285099, member: 4885"] Jim, In the past, I also used visual inpection of the brass, case head measurement and bolt lift/extraction as pressure signs. A couple years ago, I read an article about pressure and it changed my entire perspective on pressure/velocity and pressure signs. The author shows that from a statistical perspective, throwing a dart at a wall is about as good to indicate pressure as case head expansion is. Here is a link to the paper. [URL="http://www.shootingsoftware.com/ftp/dbramwell%20july%2019%2004.pdf"]http://www.shootingsoftware.com/ftp/...%2019%2004.pdf[/URL] I still monitor my brass and extraction, but I rely more on velocity. As long as I'm using an appropriate powder/bullet combination for the rifle, with published loads to compare velocities with; I trust the velocity I'm getting is a very good indicator that I am in a safe zone. [/QUOTE]
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Reloading
The first sign of excessive pressure is...
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