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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Twist ?
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<blockquote data-quote="overbore" data-source="post: 143381" data-attributes="member: 2981"><p>[ QUOTE ]</p><p>Just to help anyone over 70, if you want a barrel twist projection for candidate bullet and are "lost in the lands", if you send me the corect bullet length, MV and weight, I will run it though a program installed in Excel on my "confusalator" and publish what it says BUT you must undersatnd that a SG &gt;1.3 is considered " fully stablilzed" which does NOT mean that a sg down to 1.0 will not work. If you want to have a bullet tumble on impact like the first 5.56 with 52 gr that went end for end on impact on "Charlie", a slow twist will make furburgers or terroristburgers in a heartbeat. /ubbthreads/images/graemlins/cool.gif Overbore /ubbthreads/images/graemlins/smile.gif </p><p></p><p>[/ QUOTE ] More complete info, a work in progress is at: </p><p><a href="http://www.websitetoolbox.com/tool/post/6mmbr.vpost?=id1731002" target="_blank">http://www.websitetoolbox.com/tool/post/6mmbr.vpost?=id1731002</a></p></blockquote><p></p>
[QUOTE="overbore, post: 143381, member: 2981"] [ QUOTE ] Just to help anyone over 70, if you want a barrel twist projection for candidate bullet and are "lost in the lands", if you send me the corect bullet length, MV and weight, I will run it though a program installed in Excel on my "confusalator" and publish what it says BUT you must undersatnd that a SG >1.3 is considered " fully stablilzed" which does NOT mean that a sg down to 1.0 will not work. If you want to have a bullet tumble on impact like the first 5.56 with 52 gr that went end for end on impact on "Charlie", a slow twist will make furburgers or terroristburgers in a heartbeat. [img]/ubbthreads/images/graemlins/cool.gif[/img] Overbore [img]/ubbthreads/images/graemlins/smile.gif[/img] [/ QUOTE ] More complete info, a work in progress is at: [url="http://www.websitetoolbox.com/tool/post/6mmbr.vpost?=id1731002"]http://www.websitetoolbox.com/tool/post/6mmbr.vpost?=id1731002[/url] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Barrel Twist ?
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