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The Basics, Starting Out
Question: Reamer Dimensions vs Chamber Dimensions vs Case Dimensions
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<blockquote data-quote="Batsin" data-source="post: 3054040" data-attributes="member: 126867"><p>It is not a matter of changing tolerances. It is a simple matter of eliminating overlap. The specs and tolerances are written on each drawing and are different for each individual cartridge. It turns out that this was done for the .30 Remington and its family as far back as 1905 to prevent the very same issues. Those cartridges were designed for the Remington Autoloading Rifle (later, the Model 8) and someone had the foresight to notice the potential problem. It seems that someone at SAAMI just forgot their own history. Heck, I had to chase down a copy of a 1992 SAAMI publication to even find the 30 Rem drawing.</p><p></p><p>Edited to add: I did not know this when this thread was started. It occurred to me to look at the 30 Rem when I was looking into early auto-loading rifles.</p></blockquote><p></p>
[QUOTE="Batsin, post: 3054040, member: 126867"] It is not a matter of changing tolerances. It is a simple matter of eliminating overlap. The specs and tolerances are written on each drawing and are different for each individual cartridge. It turns out that this was done for the .30 Remington and its family as far back as 1905 to prevent the very same issues. Those cartridges were designed for the Remington Autoloading Rifle (later, the Model 8) and someone had the foresight to notice the potential problem. It seems that someone at SAAMI just forgot their own history. Heck, I had to chase down a copy of a 1992 SAAMI publication to even find the 30 Rem drawing. Edited to add: I did not know this when this thread was started. It occurred to me to look at the 30 Rem when I was looking into early auto-loading rifles. [/QUOTE]
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The Basics, Starting Out
Question: Reamer Dimensions vs Chamber Dimensions vs Case Dimensions
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