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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: 1364341" data-attributes="member: 103303"><p>Indeed, it would be interesting to create a thermal model. I don't doubt your results. Heating at the base due to combustion, heating of the bearing surface due to friction in the barrel, and ogive/tip heating in the atmosphere. As I stated earlier, copper and lead are classified as athermal, as far as their mechanical properties are concerned. They both have very different thermal properties though, when it comes to heat transfer. For example copper conducts heat at a rate of 10x that of lead. It also has twice the specific heat capacity of lead. Maybe the bonding between the two is affected somehow with a larger delta T? </p><p></p><p>Perhaps it's wise to consider animal physiology as a variable with temperature too.</p></blockquote><p></p>
[QUOTE="Hand Skills, post: 1364341, member: 103303"] Indeed, it would be interesting to create a thermal model. I don't doubt your results. Heating at the base due to combustion, heating of the bearing surface due to friction in the barrel, and ogive/tip heating in the atmosphere. As I stated earlier, copper and lead are classified as athermal, as far as their mechanical properties are concerned. They both have very different thermal properties though, when it comes to heat transfer. For example copper conducts heat at a rate of 10x that of lead. It also has twice the specific heat capacity of lead. Maybe the bonding between the two is affected somehow with a larger delta T? Perhaps it's wise to consider animal physiology as a variable with temperature too. [/QUOTE]
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Cold temp affecting terminal performance of plastic tipped bullets
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