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Rifles, Reloading, Optics, Equipment
Reloading
Accurate Burn Rate chart that compares Hodgden-Alliant-Viht powders
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<blockquote data-quote="Veteran" data-source="post: 2435683" data-attributes="member: 118038"><p>One other thought as the barrel harmonics cause sound and pressure waves to move back and forth in the barrel, the amount of friction the bullet experiences going down the barrel is also not a constant. So, small changes in bullet contact with the lands and rifling going down the barrel as it twists and turns due to harmonics may also be contributing factor to these flat spots in the velocity curve. A little more friction due to bullet resistance against an undulating barrel that is not perfectly straight for some milliseconds means less velocity at exit. All of these things play into counter intuitive physics results in the real world.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2435683, member: 118038"] One other thought as the barrel harmonics cause sound and pressure waves to move back and forth in the barrel, the amount of friction the bullet experiences going down the barrel is also not a constant. So, small changes in bullet contact with the lands and rifling going down the barrel as it twists and turns due to harmonics may also be contributing factor to these flat spots in the velocity curve. A little more friction due to bullet resistance against an undulating barrel that is not perfectly straight for some milliseconds means less velocity at exit. All of these things play into counter intuitive physics results in the real world. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Accurate Burn Rate chart that compares Hodgden-Alliant-Viht powders
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