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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sako official barrel break in procedure
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<blockquote data-quote="shortgrass" data-source="post: 1313167" data-attributes="member: 24284"><p>The method of rifling (cold hammer forged, cut, or button) has little to do with "smoothness" of the rifled bore. Button rifling would seem to be the most logical method of leaving the rifled bore 'smooth' as it actually swages the grooves into the bore wall, but there are other factors involved. The quality of the tooling employed with any method has a great deal to do with the quality of the rifled bore. Lapping, either by machine of by hand, can make-up for the tooling, but I know of no major manufacturer that laps their barrels, maybe only some of the 'boutique' rifle manufacturers. I'm in the "break-in" camp, even if you bore scope before firing and it 'appears' smooth.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 1313167, member: 24284"] The method of rifling (cold hammer forged, cut, or button) has little to do with "smoothness" of the rifled bore. Button rifling would seem to be the most logical method of leaving the rifled bore 'smooth' as it actually swages the grooves into the bore wall, but there are other factors involved. The quality of the tooling employed with any method has a great deal to do with the quality of the rifled bore. Lapping, either by machine of by hand, can make-up for the tooling, but I know of no major manufacturer that laps their barrels, maybe only some of the 'boutique' rifle manufacturers. I'm in the "break-in" camp, even if you bore scope before firing and it 'appears' smooth. [/QUOTE]
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Sako official barrel break in procedure
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