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Rifles, Reloading, Optics, Equipment
Reloading
Case length variation in new brass and accuracy
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<blockquote data-quote="MagnumManiac" data-source="post: 2622310" data-attributes="member: 10755"><p>I ran several 300WM rifles, a few factory but mostly comp guns.</p><p>I never ran my brass at 2.610". All of my brass was run at .010" below MAX CHAMBER LENGTH AND KEPT THERE.</p><p>One of my barrels liked 2.645" but most ran 2.640".</p><p>Also, brass only stretches when you size it, not from firing. When you fireform a belted mag, generally the neck SHORTENS when you fire it.</p><p>I take little from the actual length on group size, but whatever it is, it must be SQUARE to produce consistent groups.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2622310, member: 10755"] I ran several 300WM rifles, a few factory but mostly comp guns. I never ran my brass at 2.610”. All of my brass was run at .010” below MAX CHAMBER LENGTH AND KEPT THERE. One of my barrels liked 2.645” but most ran 2.640”. Also, brass only stretches when you size it, not from firing. When you fireform a belted mag, generally the neck SHORTENS when you fire it. I take little from the actual length on group size, but whatever it is, it must be SQUARE to produce consistent groups. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Case length variation in new brass and accuracy
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