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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Reamer question
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<blockquote data-quote="MagnumManiac" data-source="post: 3038028" data-attributes="member: 10755"><p>Chamber dimension, if the same on both/either reamer, are the same, then nothing changes but the throat length.</p><p>I run A191 reamers in my comp 300WM's, this changes 2 things, shoulder position over SAAMI and throat length over SAAMI.</p><p>Although not a true issue until after the first firing, .008" makes quite a difference to the brass even though the belt is still the governing headspace on the first firing, only difference is that the shoulder isn't blowing forward .020".</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 3038028, member: 10755"] Chamber dimension, if the same on both/either reamer, are the same, then nothing changes but the throat length. I run A191 reamers in my comp 300WM’s, this changes 2 things, shoulder position over SAAMI and throat length over SAAMI. Although not a true issue until after the first firing, .008” makes quite a difference to the brass even though the belt is still the governing headspace on the first firing, only difference is that the shoulder isn’t blowing forward .020”. Cheers. [/QUOTE]
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