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Long Range Hunting & Shooting
30-378 WBY or Lazzeroni Warbird ?
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<blockquote data-quote="Brent" data-source="post: 3808" data-attributes="member: 99"><p>Chris,</p><p>if you weigh those twenty other cases with water compared to the other 40, then do the math to compare actual capacity I think you might even be MORE surprised. <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> Mine were ALL within +- .1gr, and that was from three different lots on once fired factory ammo. <img src="http://images/icons/shocked.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p>Seeings how brass is 8 times denser than water, the extractor groove variance etc can make a huge difference in wt, with the internal capacity still being exactly identical. I weighed each case on the digital scale and wrote the weight on each case with a marker, then weighed them all again after filling them with water from a Visine eye drop bottle, wrote the weight on each one again and subtracted the case wt from each when I was all done. The original case wt was spread out over 4.0gr! Internal wt was about center of that spread and was as I said +-.1gr, I could not believe it! <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> The exact amount of excess wt proved to be on the outside of the case at the base, somewhere that did not affect volume at all. Amazing that they could be THAT close! It took about an hour tops to check 60 cases.</p></blockquote><p></p>
[QUOTE="Brent, post: 3808, member: 99"] Chris, if you weigh those twenty other cases with water compared to the other 40, then do the math to compare actual capacity I think you might even be MORE surprised. [img]images/icons/smile.gif[/img] Mine were ALL within +- .1gr, and that was from three different lots on once fired factory ammo. [img]images/icons/shocked.gif[/img] Seeings how brass is 8 times denser than water, the extractor groove variance etc can make a huge difference in wt, with the internal capacity still being exactly identical. I weighed each case on the digital scale and wrote the weight on each case with a marker, then weighed them all again after filling them with water from a Visine eye drop bottle, wrote the weight on each one again and subtracted the case wt from each when I was all done. The original case wt was spread out over 4.0gr! Internal wt was about center of that spread and was as I said +-.1gr, I could not believe it! [img]images/icons/smile.gif[/img] [img]images/icons/smile.gif[/img] The exact amount of excess wt proved to be on the outside of the case at the base, somewhere that did not affect volume at all. Amazing that they could be THAT close! It took about an hour tops to check 60 cases. [/QUOTE]
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