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Long Range Hunting & Shooting
Proof Carbon Barrel Cooling
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<blockquote data-quote="BasilPascali" data-source="post: 1692318" data-attributes="member: 81759"><p>My business is composites and I shoot both a Sako TRG .260 Rem and an HS Precision .338 Lapua. They both have heavy barrels. Since I have seen point failure loads as well as delamination due to thermal cycling I would not want such a hybrid barrel. The coefficients of thermal expansion are quite different for composites and steel alloys. Make an interesting science project for a materials science engineering student. All that said it would be IMHO a good idea to keep the barrel from getting too hot. We saw delamination at around 140°F between composites and steel. Of course the carbon fibers are wrapped compressively, maybe 57° angle, and might not go anywhere. Just give me heavy steel alloy barrels.</p></blockquote><p></p>
[QUOTE="BasilPascali, post: 1692318, member: 81759"] My business is composites and I shoot both a Sako TRG .260 Rem and an HS Precision .338 Lapua. They both have heavy barrels. Since I have seen point failure loads as well as delamination due to thermal cycling I would not want such a hybrid barrel. The coefficients of thermal expansion are quite different for composites and steel alloys. Make an interesting science project for a materials science engineering student. All that said it would be IMHO a good idea to keep the barrel from getting too hot. We saw delamination at around 140°F between composites and steel. Of course the carbon fibers are wrapped compressively, maybe 57° angle, and might not go anywhere. Just give me heavy steel alloy barrels. [/QUOTE]
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