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Rifles, Reloading, Optics, Equipment
Reloading
Help with velocity variance
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<blockquote data-quote="boomtube" data-source="post: 454161" data-attributes="member: 9215"><p>Neither your velocity spreads nor case variations are off base. </p><p> </p><p>Temp varations are most effective in beer sessions around the campfire, there's much less effect on the range than common BS would have you believe. It's the burn temp of the powder that matters and a few degrees of ambient temp really doesn't change as much as some folks say. I suspect a LOT of the variations we hear about actually come from other factors.</p><p> </p><p>As suggested above, put the chronograph at least 10 feet from the muzzle for small cartridges, go 15 for those as large as yours. And, if you want your data from different trips to mean anything, keep the distance identical each time.</p></blockquote><p></p>
[QUOTE="boomtube, post: 454161, member: 9215"] Neither your velocity spreads nor case variations are off base. Temp varations are most effective in beer sessions around the campfire, there's much less effect on the range than common BS would have you believe. It's the burn temp of the powder that matters and a few degrees of ambient temp really doesn't change as much as some folks say. I suspect a LOT of the variations we hear about actually come from other factors. As suggested above, put the chronograph at least 10 feet from the muzzle for small cartridges, go 15 for those as large as yours. And, if you want your data from different trips to mean anything, keep the distance identical each time. [/QUOTE]
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Help with velocity variance
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