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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger - Twist Rate Recommendation Update
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<blockquote data-quote="Kiwi Greg" data-source="post: 1156263" data-attributes="member: 13456"><p>Have you recovered a fired bullet to see how much engraving is going on, it could be slipping in the bore.</p><p> </p><p>Get a CEB projectile & offer it up into the muzzle nose first it should be a nice snug fit between the lands on the bore rider up until about an 1/8 of an inch or so from the seal tite band.</p><p> </p><p>Like this, </p><p> </p><p><u><a href="http://s1004.photobucket.com/user/Kiwi-Greg/media/stuff20two20007_zpsrsv6xlug.jpg.html" target="_blank"><img src="http://i1004.photobucket.com/albums/af161/Kiwi-Greg/stuff20two20007_zpsrsv6xlug.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></u></p><p> </p><p>If it is loose it probably won't engage the rifling properly which could/should reduce the RPMs & effect stability</p><p> </p><p>I have shot 425s in the 1-9 no problem out to 2K & a friend has shot them further so 1-10 & 377 or 400 shouldn't be a problem if the projectile & barrel hold hands properly.</p></blockquote><p></p>
[QUOTE="Kiwi Greg, post: 1156263, member: 13456"] Have you recovered a fired bullet to see how much engraving is going on, it could be slipping in the bore. Get a CEB projectile & offer it up into the muzzle nose first it should be a nice snug fit between the lands on the bore rider up until about an 1/8 of an inch or so from the seal tite band. Like this, [U][URL="http://s1004.photobucket.com/user/Kiwi-Greg/media/stuff20two20007_zpsrsv6xlug.jpg.html"][IMG]http://i1004.photobucket.com/albums/af161/Kiwi-Greg/stuff20two20007_zpsrsv6xlug.jpg[/IMG][/URL][/U] If it is loose it probably won't engage the rifling properly which could/should reduce the RPMs & effect stability I have shot 425s in the 1-9 no problem out to 2K & a friend has shot them further so 1-10 & 377 or 400 shouldn't be a problem if the projectile & barrel hold hands properly. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Berger - Twist Rate Recommendation Update
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