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Rifles, Reloading, Optics, Equipment
Gunsmithing
Turn down barrel contour?
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<blockquote data-quote="J E Custom" data-source="post: 1136897" data-attributes="member: 2736"><p>I have re contoured many barrels for one reason or the other and the results were always better accuracy if the right load was used (normally it alters the harmonics and sometimes requires a load change). If it liked a bullet before it was re contoured, That normally doesn't change, but the powder charge may have to be adjusted.</p><p></p><p>In most cases the re contour improved the run out on the barrel. I have re contoured lots of bull barrels (The same diameter at the muzzle as the shank) and many of them were not very true to the bore and the re contour made a huge improvement in accuracy.</p><p></p><p>If done correctly, it is most always an improvement as long as the new contour is not to light. also this is a good time to have a brake installed because of the barrel set up. (It will be true to the bore)</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1136897, member: 2736"] I have re contoured many barrels for one reason or the other and the results were always better accuracy if the right load was used (normally it alters the harmonics and sometimes requires a load change). If it liked a bullet before it was re contoured, That normally doesn't change, but the powder charge may have to be adjusted. In most cases the re contour improved the run out on the barrel. I have re contoured lots of bull barrels (The same diameter at the muzzle as the shank) and many of them were not very true to the bore and the re contour made a huge improvement in accuracy. If done correctly, it is most always an improvement as long as the new contour is not to light. also this is a good time to have a brake installed because of the barrel set up. (It will be true to the bore) J E CUSTOM [/QUOTE]
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Turn down barrel contour?
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