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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Fluting
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<blockquote data-quote="tacomHQ" data-source="post: 1717053" data-attributes="member: 67159"><p>Does fluting increase area- yes.</p><p>To what degree? </p><p>If we use a 6 flute feature .094 deep on a 1" barrel your surface area will increase around 19%. .2dp increases to 32%.</p><p>See attached calcs. </p><p>We increase surface areas by 300+%.</p><p>We measure multiple places in and on our barrel while temp testing. Shot strings are in the 10, 20, 50's range. Our CheyTacs run cooler than the typical 300WM or 300Rum all day long. </p><p>Yes mass is slower to heat and to cool. However the radiator in your truck is not a 4 pound block of copper (when they used copper) it is a finned device. Our barrels are too- they are radiators. The hottest values you will measure on our style barrel is within a few minutes of completing a firing session and then it is cooling down. </p><p>However - and a big one at that- heat on the lands and throat is the issue. If I am pulling heat out of the chamber on every round fired - which barrel will last longer..?</p><p>.416 we shoot are freakin hot for 10's of minutes after a 15shot string. </p><p>Stiffness increase is an argument based on compression of the opposite fluted section and tension of the loaded fluted section. Vertical walls dramatically increase resistance to bending in given vectors. Most fluted barrels do not have vertical walls. We add the outer layer back onto "the fluted section" ie.. a closed flute. The large diameter section dramatically increases stiffness and our flutes are "tubes". Does anybody have any bending values or load values of a fluted barrel they can share?</p></blockquote><p></p>
[QUOTE="tacomHQ, post: 1717053, member: 67159"] Does fluting increase area- yes. To what degree? If we use a 6 flute feature .094 deep on a 1" barrel your surface area will increase around 19%. .2dp increases to 32%. See attached calcs. We increase surface areas by 300+%. We measure multiple places in and on our barrel while temp testing. Shot strings are in the 10, 20, 50's range. Our CheyTacs run cooler than the typical 300WM or 300Rum all day long. Yes mass is slower to heat and to cool. However the radiator in your truck is not a 4 pound block of copper (when they used copper) it is a finned device. Our barrels are too- they are radiators. The hottest values you will measure on our style barrel is within a few minutes of completing a firing session and then it is cooling down. However - and a big one at that- heat on the lands and throat is the issue. If I am pulling heat out of the chamber on every round fired - which barrel will last longer..? .416 we shoot are freakin hot for 10's of minutes after a 15shot string. Stiffness increase is an argument based on compression of the opposite fluted section and tension of the loaded fluted section. Vertical walls dramatically increase resistance to bending in given vectors. Most fluted barrels do not have vertical walls. We add the outer layer back onto "the fluted section" ie.. a closed flute. The large diameter section dramatically increases stiffness and our flutes are "tubes". Does anybody have any bending values or load values of a fluted barrel they can share? [/QUOTE]
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Barrel Fluting
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