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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to measure barrel twist?
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<blockquote data-quote="Brent" data-source="post: 30650" data-attributes="member: 99"><p>I do what JR does exactly. I just do it from the muzzle end (carefully) wrapping a patch on a plastic brush so it fits tight. Push it all the way in so it's conformed and following the rifling perfectly. Then I put the "flag" of tape ( I use the colored MTM cartridge box lables) that JR mentioned flush with the muzzle and at 12 o'clock, withdraw the rod for 1 revolution exactly and measure. If you're anal about it, place another flag here too, and withdraw another revolution to compare and see how consistant the twist rate is for the length of the barrel, repeat if necessary for longer barrels. </p><p></p><p>Twist consistancy could be another good topic. <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Brent, post: 30650, member: 99"] I do what JR does exactly. I just do it from the muzzle end (carefully) wrapping a patch on a plastic brush so it fits tight. Push it all the way in so it's conformed and following the rifling perfectly. Then I put the "flag" of tape ( I use the colored MTM cartridge box lables) that JR mentioned flush with the muzzle and at 12 o'clock, withdraw the rod for 1 revolution exactly and measure. If you're anal about it, place another flag here too, and withdraw another revolution to compare and see how consistant the twist rate is for the length of the barrel, repeat if necessary for longer barrels. Twist consistancy could be another good topic. [img]images/icons/smile.gif[/img] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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How to measure barrel twist?
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