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Rifles, Reloading, Optics, Equipment
Reloading
Do I throw away this whole lot of brass?
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<blockquote data-quote="Hugnot" data-source="post: 2091822" data-attributes="member: 115658"><p>Most of the above seems on track.</p><p></p><p>I see a shiny ring, probably .05" high, just over the extractor cut, might this be an indication of a <em>bad brass lot</em>? If there were tight forced brass crush fits inside the chamber just above the extractor cut but just above that point thin brass, a case rupture might occur at that point independent of head-space. The tight solid base just above the extractor cut would not expand but the thinner area just above that point would be subjected to stretching as the brass flowed forward in successive firings (tension) exceeding elastic limits of the brass. Sizing the fired cases in a F/L die would reveal the wider diameter brass area as a polished ring as the die pushed into the fatter ring. Rupture points (rings) occurred just above the polished fat ring. Sectioning cases length wise might show this - like a solid base having no taper to thinner brass above. "U" shaped inside. .</p><p></p><p>Was extraction upon firing difficult. Were the cases FF inside the chamber to make AI brass?</p><p></p><p>I like minimum head-space brass fits and avoid bumping brass as much as possible.</p><p></p><p>Sure good advice to toss the works - repeated blasts of hot gas at some 60K psi would eat up your chamber.</p><p></p><p>I had this problem with some .22-.250 brass in a tight chamber and noticed hard extraction & a similar polished ring upon sizing.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2091822, member: 115658"] Most of the above seems on track. I see a shiny ring, probably .05" high, just over the extractor cut, might this be an indication of a [I]bad brass lot[/I]? If there were tight forced brass crush fits inside the chamber just above the extractor cut but just above that point thin brass, a case rupture might occur at that point independent of head-space. The tight solid base just above the extractor cut would not expand but the thinner area just above that point would be subjected to stretching as the brass flowed forward in successive firings (tension) exceeding elastic limits of the brass. Sizing the fired cases in a F/L die would reveal the wider diameter brass area as a polished ring as the die pushed into the fatter ring. Rupture points (rings) occurred just above the polished fat ring. Sectioning cases length wise might show this - like a solid base having no taper to thinner brass above. "U" shaped inside. . Was extraction upon firing difficult. Were the cases FF inside the chamber to make AI brass? I like minimum head-space brass fits and avoid bumping brass as much as possible. Sure good advice to toss the works - repeated blasts of hot gas at some 60K psi would eat up your chamber. I had this problem with some .22-.250 brass in a tight chamber and noticed hard extraction & a similar polished ring upon sizing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Do I throw away this whole lot of brass?
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