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Rifles, Reloading, Optics, Equipment
Reloading
Partial neck sizing - a problem?
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<blockquote data-quote="J E Custom" data-source="post: 1922408" data-attributes="member: 2736"><p>Jeff this is just some of the things that I see/hear that look wrong From a gun smiths point, To me that may be/cause some of the problems you are having. </p><p></p><p>First, your chamber looks very rough. Once fired brass should come out without any annular rings/marks and should look like new brass with only a little carbon on part of the neck. This could be caused by/from several things. A bad reamer, improper feed rate, not periodically cleaning, wrong spindle speed and a roughing reamer. (Believe it or not I have had to set the chambers back on several that were chambered with the roughing reamer only and had no freebore or lead). </p><p></p><p>The other concern is the .004 thousandths shoulder bump. The gunsmith probably head spaced somewhere between .001 and .003 for proper head space. When you bump .002 or .003 over what was original head space, you defeat the purpose of a good head space and end up working the cases more that necessary. When you bump the shoulder, that ends up being the head space, so I recommend the minimum it takes to chamber well. </p><p></p><p>Not criticizing, just mentioning some of the problems I see for your benefit.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1922408, member: 2736"] Jeff this is just some of the things that I see/hear that look wrong From a gun smiths point, To me that may be/cause some of the problems you are having. First, your chamber looks very rough. Once fired brass should come out without any annular rings/marks and should look like new brass with only a little carbon on part of the neck. This could be caused by/from several things. A bad reamer, improper feed rate, not periodically cleaning, wrong spindle speed and a roughing reamer. (Believe it or not I have had to set the chambers back on several that were chambered with the roughing reamer only and had no freebore or lead). The other concern is the .004 thousandths shoulder bump. The gunsmith probably head spaced somewhere between .001 and .003 for proper head space. When you bump .002 or .003 over what was original head space, you defeat the purpose of a good head space and end up working the cases more that necessary. When you bump the shoulder, that ends up being the head space, so I recommend the minimum it takes to chamber well. Not criticizing, just mentioning some of the problems I see for your benefit. J E CUSTOM [/QUOTE]
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Reloading
Partial neck sizing - a problem?
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