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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Chamber pressure changes with altitude
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<blockquote data-quote="Pdvdh" data-source="post: 1221359" data-attributes="member: 4191"><p>An initial thought, speaking on behalf of others is worse than accusations of misspellings and poor grammar. It's almost always accompanied by arrogance and efforts to mislead, if not surrounded by, the thing they decry. Your post was no different. Why would any person pretend to know the mind and intentions of another, and then, even worse, express their self-endowed gift of understanding on a public forum.</p><p></p><p>Secondly, I arrived at an answer, and it's a stretch beyond all imagination for you to have read my prior posts, and not recognized it. The fact that I stated no connection between chamber pressure/MV and altitude has been demonstrated over generations of empirical testing and understanding of small arms fire was to set the stage for the most "logical" conclusion of those hard facts. It doesn't negate or diminish my expressed position/"answer" that any connection between altitude, in itself, and MV/chamber pressure, is nothing more than a myth. In the same camp of myth that some rifles magically improve precision with increasing range. </p><p></p><p>Thirdly, you have a most liberal definition of empirical experimentally derived evidence. If the information posted in this Thread supporting the contention that altitude affects MV meets your definition of empirical, experimental evidence, then you might consider having someone else review the design and implementation of your empirical evidence collection process, before implementation. It only qualifies as empirical evidence, to most scientists, if the experiment and data collection was designed and implemented using means, methods, and credible equipment that ensures any other qualified individual(s) can repeat the data collection process, with statistical relevance. This means control over all other possibly affecting influences, particularly when the cause and effect being studied hasn't been substantial enough to have become apparent to the extent of having been further studied and verified over generations of previous small arms fire study and understanding. </p><p></p><p>Do you have any sound science-based hypotheses to suspect that altitude alone effects changes in MV from small arms? I can't think of one. Back to the rifles that were long respected as capable of improved precision at greater ranges - a person would have to subscribe to the belief that the bullets have an inherent self-guidance ability that constantly and consistently corrects normal bullet dispersion in only one scientifically inconceivable manner - towards improved precision. Many over the years also mistakenly considered the apparent abundance of anecdotal evidence to rise to the standard of empirical evidence, thereby supporting and perpetuating the myth.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1221359, member: 4191"] An initial thought, speaking on behalf of others is worse than accusations of misspellings and poor grammar. It's almost always accompanied by arrogance and efforts to mislead, if not surrounded by, the thing they decry. Your post was no different. Why would any person pretend to know the mind and intentions of another, and then, even worse, express their self-endowed gift of understanding on a public forum. Secondly, I arrived at an answer, and it's a stretch beyond all imagination for you to have read my prior posts, and not recognized it. The fact that I stated no connection between chamber pressure/MV and altitude has been demonstrated over generations of empirical testing and understanding of small arms fire was to set the stage for the most "logical" conclusion of those hard facts. It doesn't negate or diminish my expressed position/"answer" that any connection between altitude, in itself, and MV/chamber pressure, is nothing more than a myth. In the same camp of myth that some rifles magically improve precision with increasing range. Thirdly, you have a most liberal definition of empirical experimentally derived evidence. If the information posted in this Thread supporting the contention that altitude affects MV meets your definition of empirical, experimental evidence, then you might consider having someone else review the design and implementation of your empirical evidence collection process, before implementation. It only qualifies as empirical evidence, to most scientists, if the experiment and data collection was designed and implemented using means, methods, and credible equipment that ensures any other qualified individual(s) can repeat the data collection process, with statistical relevance. This means control over all other possibly affecting influences, particularly when the cause and effect being studied hasn't been substantial enough to have become apparent to the extent of having been further studied and verified over generations of previous small arms fire study and understanding. Do you have any sound science-based hypotheses to suspect that altitude alone effects changes in MV from small arms? I can't think of one. Back to the rifles that were long respected as capable of improved precision at greater ranges - a person would have to subscribe to the belief that the bullets have an inherent self-guidance ability that constantly and consistently corrects normal bullet dispersion in only one scientifically inconceivable manner - towards improved precision. Many over the years also mistakenly considered the apparent abundance of anecdotal evidence to rise to the standard of empirical evidence, thereby supporting and perpetuating the myth. [/QUOTE]
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