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Rifles, Reloading, Optics, Equipment
Reloading
Velocity & Pressure Spike
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<blockquote data-quote="Mikecr" data-source="post: 1303732" data-attributes="member: 1521"><p>That's too many changes at once for troubleshooting.</p><p></p><p>It's common that fire formed brass would produce different results over new,, and that differently sized brass would produce different results,, and the same with different brass. Two things here that can lead to results going either higher or lower in MV: capacity, or chamber fit.</p><p>Given same chamber fit, lower capacity brass will go higher pressure.</p><p>Given same capacity brass, tighter chamber fitting leads to higher pressure.</p><p>Higher pressure is not a problem -provided you load developed under the condition you have.</p><p>So load develop with fire formed brass, that you intend to stick with. </p><p></p><p>Depending on your load density you might end up going to different powder than you had planned beforehand.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1303732, member: 1521"] That's too many changes at once for troubleshooting. It's common that fire formed brass would produce different results over new,, and that differently sized brass would produce different results,, and the same with different brass. Two things here that can lead to results going either higher or lower in MV: capacity, or chamber fit. Given same chamber fit, lower capacity brass will go higher pressure. Given same capacity brass, tighter chamber fitting leads to higher pressure. Higher pressure is not a problem -provided you load developed under the condition you have. So load develop with fire formed brass, that you intend to stick with. Depending on your load density you might end up going to different powder than you had planned beforehand. [/QUOTE]
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