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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Thoughts on this please
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<blockquote data-quote="QuietTexan" data-source="post: 2845665" data-attributes="member: 116181"><p>Because reamers have tolerances like anything else. All it takes is getting a chamber cut with a new tool vs a worn tool. Factory will always lean on the side of being long enough and not too short. The shoulder portion of the reamer cuts a lot more metal than the belt portion does, 10x moreso if they aren't using carbide roughers.</p><p></p><p>There are surprising +/-0.003 variations between "identical" reamers pretty often. Throats are the most likely place to be off mainly, those can be full 0.010" or more off.</p><p></p><p>This whole mess looks like normal tapered inner wall case fitment to me. Same thing like the lines I get on my 30-06 above the case web.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2845665, member: 116181"] Because reamers have tolerances like anything else. All it takes is getting a chamber cut with a new tool vs a worn tool. Factory will always lean on the side of being long enough and not too short. The shoulder portion of the reamer cuts a lot more metal than the belt portion does, 10x moreso if they aren't using carbide roughers. There are surprising +/-0.003 variations between "identical" reamers pretty often. Throats are the most likely place to be off mainly, those can be full 0.010" or more off. This whole mess looks like normal tapered inner wall case fitment to me. Same thing like the lines I get on my 30-06 above the case web. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Thoughts on this please
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