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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel fluting post build affect accuracy?
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<blockquote data-quote="LB" data-source="post: 70032" data-attributes="member: 2721"><p>[ QUOTE ]</p><p></p><p></p><p>Have you, or anyone noticed changes in bore dimensions on fluted barrels when warm compared to cold. </p><p></p><p>David. </p><p></p><p>[/ QUOTE ]</p><p></p><p>If the question suggests that the bore diameter increases when "warm", irrespective of fluting, then the simple physics answer is no, unless cherry red, perhaps? </p><p></p><p>The flute function is to increase surface area to facilitate cooling, as with the fins on a radiator. It is also said to increase stiffness and reduce barrel whip. Generally speaking, the bore remains as straight as it was drilled; in cross section, although it may warp. However, the temperature at which this occurs is beyond warm. Also, most fluting that I have seen is either an odd number, or positioned so that the thin sections are not directly opposed. But, I have not seen enough examples to say that that is a true statement, anything is possible?</p><p></p><p>Actually measuring the bore when "hot" would seem to be a difficult assignment, but I could visualize the metal expanding in every dimension, length, outer diameter as well as interiorly, creating a slightly more snug bore. LB</p></blockquote><p></p>
[QUOTE="LB, post: 70032, member: 2721"] [ QUOTE ] Have you, or anyone noticed changes in bore dimensions on fluted barrels when warm compared to cold. David. [/ QUOTE ] If the question suggests that the bore diameter increases when "warm", irrespective of fluting, then the simple physics answer is no, unless cherry red, perhaps? The flute function is to increase surface area to facilitate cooling, as with the fins on a radiator. It is also said to increase stiffness and reduce barrel whip. Generally speaking, the bore remains as straight as it was drilled; in cross section, although it may warp. However, the temperature at which this occurs is beyond warm. Also, most fluting that I have seen is either an odd number, or positioned so that the thin sections are not directly opposed. But, I have not seen enough examples to say that that is a true statement, anything is possible? Actually measuring the bore when "hot" would seem to be a difficult assignment, but I could visualize the metal expanding in every dimension, length, outer diameter as well as interiorly, creating a slightly more snug bore. LB [/QUOTE]
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Barrel fluting post build affect accuracy?
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