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Rifles, Reloading, Optics, Equipment
Gunsmithing
Turn down barrel contour?
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<blockquote data-quote="Bart B" data-source="post: 1136946" data-attributes="member: 5302"><p>Like fluting and milling flats on a barrel, any outside metal removal lets the tiny stress still in them move the metal. Hammer forged barrels get smaller inside, button rifled one get larger. Cut rifled barrels change the least because their rifling process puts the least amount of stress on the barrel.</p><p></p><p>Accuracy degrades only a little bit, but enough that those who shoot rifles the most accurate will notice it. Bore and groove dimensions change only .0001" or a bit more, but that's enough.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1136946, member: 5302"] Like fluting and milling flats on a barrel, any outside metal removal lets the tiny stress still in them move the metal. Hammer forged barrels get smaller inside, button rifled one get larger. Cut rifled barrels change the least because their rifling process puts the least amount of stress on the barrel. Accuracy degrades only a little bit, but enough that those who shoot rifles the most accurate will notice it. Bore and groove dimensions change only .0001" or a bit more, but that's enough. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Turn down barrel contour?
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