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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Relationship between CBTO and freebore demension
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<blockquote data-quote="Greyfox" data-source="post: 2605652" data-attributes="member: 10291"><p>It's a common practice to supply a dummy round when I'm trying to replicate results from an existing rifle that is having its barrel replaced. For a new rifle/barrel, where I'm interested in having a free-bore that is different(longer) from the SAAMI spec, I will get a copy of the standard reamer print. Most smiths should understand your asking for an additional .020-030". If the smith wants a dummy round, it can be made accurately enough using a comparator as long as you are judicious, and account for any added dimension of the comparator to your measurement. </p><p>I have done this with good success with my 6.5x284's which I ALWAYS specify. Example:</p><p>[ATTACH=full]389833[/ATTACH]</p></blockquote><p></p>
[QUOTE="Greyfox, post: 2605652, member: 10291"] It’s a common practice to supply a dummy round when I’m trying to replicate results from an existing rifle that is having its barrel replaced. For a new rifle/barrel, where I’m interested in having a free-bore that is different(longer) from the SAAMI spec, I will get a copy of the standard reamer print. Most smiths should understand your asking for an additional .020-030”. If the smith wants a dummy round, it can be made accurately enough using a comparator as long as you are judicious, and account for any added dimension of the comparator to your measurement. I have done this with good success with my 6.5x284’s which I ALWAYS specify. Example: [ATTACH type="full"]389833[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Relationship between CBTO and freebore demension
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