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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 PRC Freebore and Cartridge Base to Ogive help
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<blockquote data-quote="DBoone" data-source="post: 1679277" data-attributes="member: 104920"><p>After months of back and forth with a gunsmith, I received my custom 6.5 PRC yesterday. So tonight I performed a lands test on my top two picks of hunting bullets. And this is where I think I have a problem...</p><p></p><p>During the build process I sent the same 2 bullets to the gunsmith to identify my CBTO and COAL touching lands and confirm it would fit in the detach mag I had chosen. So they got back to me with the info using their .180"ish freebore reamer. I crunched the numbers and decided I'd like to have more room to chase lands during the life of the barrel. So I spec'd a .130"ish freebore reamer, which would then need to be ordered.</p><p></p><p>... Back to tonight's results, my one measurement was identical to the info they sent me, and the other was off by .010". </p><p></p><p>Did they not use the reamer I had spec'd?</p><p></p><p>I'll start by putting my results up here in hopes others can do the same. I will try and test a few other bullets I have also... 135 Classic Hunter, 143 ELDX, 160 Matrix VLD.</p><p></p><p><strong>Freebore - ??????</strong></p><p><strong></strong></p><p><strong>142 grain Nosler ABLR - 2.380" CBTO</strong></p><p><strong></strong></p><p><strong>140 grain Berger VLD Hunting - 2.317" CBTO</strong></p><p></p><p></p><p>Thanks</p></blockquote><p></p>
[QUOTE="DBoone, post: 1679277, member: 104920"] After months of back and forth with a gunsmith, I received my custom 6.5 PRC yesterday. So tonight I performed a lands test on my top two picks of hunting bullets. And this is where I think I have a problem... During the build process I sent the same 2 bullets to the gunsmith to identify my CBTO and COAL touching lands and confirm it would fit in the detach mag I had chosen. So they got back to me with the info using their .180"ish freebore reamer. I crunched the numbers and decided I'd like to have more room to chase lands during the life of the barrel. So I spec'd a .130"ish freebore reamer, which would then need to be ordered. ... Back to tonight's results, my one measurement was identical to the info they sent me, and the other was off by .010". Did they not use the reamer I had spec'd? I'll start by putting my results up here in hopes others can do the same. I will try and test a few other bullets I have also... 135 Classic Hunter, 143 ELDX, 160 Matrix VLD. [B]Freebore - ?????? 142 grain Nosler ABLR - 2.380" CBTO 140 grain Berger VLD Hunting - 2.317" CBTO[/B] Thanks [/QUOTE]
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6.5 PRC Freebore and Cartridge Base to Ogive help
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