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Rifles, Reloading, Optics, Equipment
Reloading
Trimming unfired brass
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<blockquote data-quote="MagnumManiac" data-source="post: 1418939" data-attributes="member: 10755"><p>I don't trim new brass. </p><p>Often, even with match grade/premium brass, you will see that the first firing will lengthen the neck unevenly, and sizing it will lengthen it even more unevenly.</p><p>It can take 3 neck sizings for the brass to stabilise and stop growing unevenly.</p><p></p><p>Bushing dies arrest this somewhat, but can cause donuts, which I hate.</p><p></p><p>I have never seen a difference on target with brass that had .003" in neck length difference.</p><p>Uneven necks have caused a flier here and there though.</p><p></p><p>I trim after the first firing/sizing and check after every firing for uneven neck growth.</p><p></p><p>Cheers.</p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1418939, member: 10755"] I don’t trim new brass. Often, even with match grade/premium brass, you will see that the first firing will lengthen the neck unevenly, and sizing it will lengthen it even more unevenly. It can take 3 neck sizings for the brass to stabilise and stop growing unevenly. Bushing dies arrest this somewhat, but can cause donuts, which I hate. I have never seen a difference on target with brass that had .003” in neck length difference. Uneven necks have caused a flier here and there though. I trim after the first firing/sizing and check after every firing for uneven neck growth. Cheers. :) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Trimming unfired brass
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