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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet temp in flight
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<blockquote data-quote="RockyMtnMT" data-source="post: 2645212" data-attributes="member: 7999"><p>So I geeked out a bit this morning. I'm pretty sure this was beat up pretty good a few years ago when the heat resistant tips hit the market. I did a search for bullet temperature in flight and found this study.</p><p></p><p>[URL unfurl="true"]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764414/#!po=1.08[/URL]</p><p></p><p>Pretty long read, but the short, farm boy interpretation is, bullets show the highest temp near the muzzle and then cool down in flight. The baring surface showed the highest temp and the meplat and base showed cooler temps. The highest temp they recorded was about 85*C ave from 38 special. The high velocity the tested were 7.62x39 and 308win. Peak temp for these was 63*C and 67*C respectively.</p><p></p><p>Then I looked up the melting temp for plastic. Given there is lots of different plastics it varies, but the given temp for lowest was 100*C. Harder plastics look to be over 200*C.</p><p></p><p>According to this test, there was no previous test that actually measured temp in flight. Previous data was theoretical.</p><p></p><p>I'm done geeking now. Anyone know of info showing bullets running hotter?</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 2645212, member: 7999"] So I geeked out a bit this morning. I'm pretty sure this was beat up pretty good a few years ago when the heat resistant tips hit the market. I did a search for bullet temperature in flight and found this study. [URL unfurl="true"]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764414/#!po=1.08[/URL] Pretty long read, but the short, farm boy interpretation is, bullets show the highest temp near the muzzle and then cool down in flight. The baring surface showed the highest temp and the meplat and base showed cooler temps. The highest temp they recorded was about 85*C ave from 38 special. The high velocity the tested were 7.62x39 and 308win. Peak temp for these was 63*C and 67*C respectively. Then I looked up the melting temp for plastic. Given there is lots of different plastics it varies, but the given temp for lowest was 100*C. Harder plastics look to be over 200*C. According to this test, there was no previous test that actually measured temp in flight. Previous data was theoretical. I'm done geeking now. Anyone know of info showing bullets running hotter? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet temp in flight
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