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Hunting
Long Range Hunting & Shooting
Barrel contour on new build.
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<blockquote data-quote="5.56×250" data-source="post: 1728142" data-attributes="member: 110162"><p>I read an interesting test in one of the gun mags I get where they tested the heating and cooling of a stainless fluted heavy sporter, a stainless heavy , and a carbon wrapped barrel. Not very involved, but enough info to get a fair idea of how 3 different schools of thought on barrel heat cycling did. </p><p> This is from memory, so it's not verbatim, but makes the point. After a 5 shot (?) group they measured the temp of the breach end , inside the chamber, then they waited 10 minutes and checked the temp again. The heavy barrel built the least heat and cooled 2nd fastest . The fluted barrel built the second most, or least heat and cooled the SLOWEST . The carbon fiber barrel got the hottest by 20+*, but also cooled the quickest. At the end of the 10 minute wait, the carbon barrel was still hotter than the heavy barrel, even though it cooled quicker . The fluted and carbon barrel were about the same temp after 10 minutes.</p><p> I dont know if that cleared or muddied the water, op, but there it is anyway.</p></blockquote><p></p>
[QUOTE="5.56×250, post: 1728142, member: 110162"] I read an interesting test in one of the gun mags I get where they tested the heating and cooling of a stainless fluted heavy sporter, a stainless heavy , and a carbon wrapped barrel. Not very involved, but enough info to get a fair idea of how 3 different schools of thought on barrel heat cycling did. This is from memory, so it's not verbatim, but makes the point. After a 5 shot (?) group they measured the temp of the breach end , inside the chamber, then they waited 10 minutes and checked the temp again. The heavy barrel built the least heat and cooled 2nd fastest . The fluted barrel built the second most, or least heat and cooled the SLOWEST . The carbon fiber barrel got the hottest by 20+*, but also cooled the quickest. At the end of the 10 minute wait, the carbon barrel was still hotter than the heavy barrel, even though it cooled quicker . The fluted and carbon barrel were about the same temp after 10 minutes. I dont know if that cleared or muddied the water, op, but there it is anyway. [/QUOTE]
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Barrel contour on new build.
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