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Rifles, Reloading, Optics, Equipment
Gunsmithing
barrel chambering
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<blockquote data-quote="IdahoCTD" data-source="post: 1229130" data-attributes="member: 13110"><p>I pre-drill about .030-.040" under the chamber shoulder dimension. Usually I leave about .200-.300" left to ream on the depth. Then I bore the hole to about .010" under shoulder dimension for the full depth of the drilled hole. Next I enlarge the back half just large enough to get the reamer in the hole and to make sure the pilot is in the bore for it's full length. After that it's about 15 minutes to ream the rest of the chamber. </p><p></p><p>This way is much quicker than running the reamer in .050-.100" at a time. It also ensures the chamber is straight provided the bore is dialed in correctly.</p></blockquote><p></p>
[QUOTE="IdahoCTD, post: 1229130, member: 13110"] I pre-drill about .030-.040" under the chamber shoulder dimension. Usually I leave about .200-.300" left to ream on the depth. Then I bore the hole to about .010" under shoulder dimension for the full depth of the drilled hole. Next I enlarge the back half just large enough to get the reamer in the hole and to make sure the pilot is in the bore for it's full length. After that it's about 15 minutes to ream the rest of the chamber. This way is much quicker than running the reamer in .050-.100" at a time. It also ensures the chamber is straight provided the bore is dialed in correctly. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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barrel chambering
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