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Long Range Hunting & Shooting
Cold temp affecting terminal performance of plastic tipped bullets
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<blockquote data-quote="Hand Skills" data-source="post: 1364462" data-attributes="member: 103303"><p>Possibly in the case of monolithic copper bullets, but with lead in the mix i wouldn't count on it, not in the ~1s timeframe that would apply to our example. Keep in mind copper has a melting point of 1085C. 40deg delta T is pretty small, as a percent. </p><p></p><p>Lead melts at 330C - 40deg delta T is a lot more significant (12%), especially considering I have SEEN exposed lead at the base of a bullet melt as a result of firing. The more I think about this, the more I am thinking about how close to a phase change that core really is upon impact. </p><p></p><p>Just the thoughts of a carpenter...</p></blockquote><p></p>
[QUOTE="Hand Skills, post: 1364462, member: 103303"] Possibly in the case of monolithic copper bullets, but with lead in the mix i wouldn't count on it, not in the ~1s timeframe that would apply to our example. Keep in mind copper has a melting point of 1085C. 40deg delta T is pretty small, as a percent. Lead melts at 330C - 40deg delta T is a lot more significant (12%), especially considering I have SEEN exposed lead at the base of a bullet melt as a result of firing. The more I think about this, the more I am thinking about how close to a phase change that core really is upon impact. Just the thoughts of a carpenter... [/QUOTE]
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Cold temp affecting terminal performance of plastic tipped bullets
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