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Rifles, Reloading, Optics, Equipment
Reloading
Over Pressure
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<blockquote data-quote="freddiej" data-source="post: 1880213" data-attributes="member: 26227"><p>[USER=75903]live2huntmt,[/USER] There are a few reasons for your over/high pressure signs at such a low powder charge.</p><p>#1 is a min or close to min SAAMI chamber. a pair of calibers will show you how big your chamber is. </p><p>#2 Hot powder batch</p><p>#3 carbon ring</p><p>#4 your brass' necks are all too long, but that is normal from what I have seen with once fired resized brass. Especially, in 223/5.56. Some of them grew 0.030" (over max) from the initial firing to resizing. My 300 W/M had an average stretch from virgin case to once fired was 0.018"(over max). I would grab the calibers and measure them brass. </p><p>I suspect #4 or #1 are your problem.</p></blockquote><p></p>
[QUOTE="freddiej, post: 1880213, member: 26227"] [USER=75903]live2huntmt,[/USER] There are a few reasons for your over/high pressure signs at such a low powder charge. #1 is a min or close to min SAAMI chamber. a pair of calibers will show you how big your chamber is. #2 Hot powder batch #3 carbon ring #4 your brass' necks are all too long, but that is normal from what I have seen with once fired resized brass. Especially, in 223/5.56. Some of them grew 0.030" (over max) from the initial firing to resizing. My 300 W/M had an average stretch from virgin case to once fired was 0.018"(over max). I would grab the calibers and measure them brass. I suspect #4 or #1 are your problem. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Over Pressure
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