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Rifles, Reloading, Optics, Equipment
Reloading
HELP WITH SATERLEE VELOCITY TEST
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<blockquote data-quote="Opa-lopa" data-source="post: 2442565" data-attributes="member: 108809"><p>I measured Engraving pressure variation in small cal bullets 20 years ago for the government. The variability (sigma) is a MINIMUM of 5% of the peak engraving pressure, that causes a muzzle velocity change of 10 FPS. As a reloader, the variation in this is something out of your control. So 95% of your bullets will have a + - 20 FPS swing at any given charge weight. Go look at my website at the 2004 precedings reference.</p></blockquote><p></p>
[QUOTE="Opa-lopa, post: 2442565, member: 108809"] I measured Engraving pressure variation in small cal bullets 20 years ago for the government. The variability (sigma) is a MINIMUM of 5% of the peak engraving pressure, that causes a muzzle velocity change of 10 FPS. As a reloader, the variation in this is something out of your control. So 95% of your bullets will have a + - 20 FPS swing at any given charge weight. Go look at my website at the 2004 precedings reference. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
HELP WITH SATERLEE VELOCITY TEST
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