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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm 180gr VLD Hunting
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<blockquote data-quote="Bob Wright" data-source="post: 2006399" data-attributes="member: 104363"><p>7RM was .090 off. I followed berger seating depth tutorial. NOW, after watching Eric Cortina video on page 1 of this thread, I am wondering how many nodes I completely skipped over at .090 off! Reloading is the gift that keeps on updating and throwing curveballs.</p><p>What I got from the video is find your lands, back off .020 and then run seating depths in .003 increments away until a node consistently shows groups over a small spread of seating depths. </p><p>Apparently, the seated cartridge has it's own node irrespective of where the lands are and tuning is minimal through the life of the barrel. Watch that video.</p><p>It matches up with the Precision Rifle Blog post I posted a while back, but got little responses to here at LRH. Maybe because lands and jump are a long held belief that might not actually be a real relationship. Its actually just the cartridge.</p><p>Get the popcorn out.....</p><p>[URL unfurl="true"]https://www.longrangehunting.com/threads/article-precision-rifle-blog-on-data-driven-bullet-jump.239398/[/URL]</p></blockquote><p></p>
[QUOTE="Bob Wright, post: 2006399, member: 104363"] 7RM was .090 off. I followed berger seating depth tutorial. NOW, after watching Eric Cortina video on page 1 of this thread, I am wondering how many nodes I completely skipped over at .090 off! Reloading is the gift that keeps on updating and throwing curveballs. What I got from the video is find your lands, back off .020 and then run seating depths in .003 increments away until a node consistently shows groups over a small spread of seating depths. Apparently, the seated cartridge has it's own node irrespective of where the lands are and tuning is minimal through the life of the barrel. Watch that video. It matches up with the Precision Rifle Blog post I posted a while back, but got little responses to here at LRH. Maybe because lands and jump are a long held belief that might not actually be a real relationship. Its actually just the cartridge. Get the popcorn out..... [URL unfurl="true"]https://www.longrangehunting.com/threads/article-precision-rifle-blog-on-data-driven-bullet-jump.239398/[/URL] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm 180gr VLD Hunting
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