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Rifles, Reloading, Optics, Equipment
Reloading
What am I doing wrong with sizing brass?
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<blockquote data-quote="jdyoung" data-source="post: 1982747" data-attributes="member: 113391"><p>You seem to have a donut at the case neck/ shoulder junction. This is caused by the flowing of the 1st fired brass to fit the chamber (especially belted magnum). The MINIMUN clearance suggested between the case neck and the chamber neck is 0.003". That donut can grip the bullet tighter than you expected and cause dangerous pressures 'cause the bullet doesn't get released properly. The suggested remedy is to inside neck ream.</p><p>That's all I know about it as while I have checked the measurements of the neck as I asked you, and have reamers and such for the job, I have never had to neck ream.</p><p>Neck Reaming is only done on FIRED CASES BEFORE SIZING.</p><p>Sorry if this doesn't help.</p></blockquote><p></p>
[QUOTE="jdyoung, post: 1982747, member: 113391"] You seem to have a donut at the case neck/ shoulder junction. This is caused by the flowing of the 1st fired brass to fit the chamber (especially belted magnum). The MINIMUN clearance suggested between the case neck and the chamber neck is 0.003". That donut can grip the bullet tighter than you expected and cause dangerous pressures 'cause the bullet doesn't get released properly. The suggested remedy is to inside neck ream. That's all I know about it as while I have checked the measurements of the neck as I asked you, and have reamers and such for the job, I have never had to neck ream. Neck Reaming is only done on FIRED CASES BEFORE SIZING. Sorry if this doesn't help. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What am I doing wrong with sizing brass?
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