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Rifles, Reloading, Optics, Equipment
Reloading
Case weight variability question
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<blockquote data-quote="BrentM" data-source="post: 2191957" data-attributes="member: 61747"><p>Case weight across the same head stamp is almost totally worthless. Most of the brass weight is the case head with some variability through out the case. What is important is internal volume.</p><p></p><p>I have done this exercise multiple times, take brass weigh it, mark it, and then do a h2o weight. There is very little correlation between the 2 as long as they are not grossly out of whack. As long as I am using same head stamp brass I've stopped messing with this crap and have had zero issue with low sd and good accuracy. </p><p></p><p>If you want to get into brass variance I'd take a hard look at the neck thickness and hardness. Maybe anneal, test thickness to ensure you are not getting huge variation in tension. Of course the other items are powder type, charge weight, primer, and seating depth. Being anal will pay dividends but I don't see it in the weighing of brass.</p></blockquote><p></p>
[QUOTE="BrentM, post: 2191957, member: 61747"] Case weight across the same head stamp is almost totally worthless. Most of the brass weight is the case head with some variability through out the case. What is important is internal volume. I have done this exercise multiple times, take brass weigh it, mark it, and then do a h2o weight. There is very little correlation between the 2 as long as they are not grossly out of whack. As long as I am using same head stamp brass I've stopped messing with this crap and have had zero issue with low sd and good accuracy. If you want to get into brass variance I'd take a hard look at the neck thickness and hardness. Maybe anneal, test thickness to ensure you are not getting huge variation in tension. Of course the other items are powder type, charge weight, primer, and seating depth. Being anal will pay dividends but I don't see it in the weighing of brass. [/QUOTE]
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Case weight variability question
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