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The Range
Rifle & Shotgun Discussion
Another long range bolt gun offering from APO
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<blockquote data-quote="Jcann" data-source="post: 3209590" data-attributes="member: 33119"><p>From what it sounds, they are selecting barrels that meet certain air gauge requirements. Much like they did years ago in selecting NM barrels for the M1 and M14. I'm unsure what those requirements are but at least you're getting a selected barrel. Now, an air gauged barrel in and of itself does not guarantee an accurate barrel but it is a step in the right direction.</p><p></p><p>To meet Select Match Grade criteria for Shilen barrels, the groove diameter must air gauge within .0003" of their standard diameter. Moreover, the uniformity of the bore cannot vary more than .0001" for the entire length of the barrel.</p><p></p><p>Now these Remington barrels won't meet Shilen standards but at least APO is air gauging them and culling the ones that don't stack up.</p></blockquote><p></p>
[QUOTE="Jcann, post: 3209590, member: 33119"] From what it sounds, they are selecting barrels that meet certain air gauge requirements. Much like they did years ago in selecting NM barrels for the M1 and M14. I'm unsure what those requirements are but at least you're getting a selected barrel. Now, an air gauged barrel in and of itself does not guarantee an accurate barrel but it is a step in the right direction. To meet Select Match Grade criteria for Shilen barrels, the groove diameter must air gauge within .0003" of their standard diameter. Moreover, the uniformity of the bore cannot vary more than .0001" for the entire length of the barrel. Now these Remington barrels won't meet Shilen standards but at least APO is air gauging them and culling the ones that don't stack up. [/QUOTE]
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Another long range bolt gun offering from APO
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