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<blockquote data-quote="Pdvdh" data-source="post: 1149366" data-attributes="member: 4191">The giddiness over these bullets is leading to some over-thinking, IMO.&nbsp; I give Hornady the benefit of the doubt based on the information they&#039;ve provided.&nbsp; Didn&#039;t they seat both their old tips and new tips in the identical bullets, and then measure the improved downrange velocity?&nbsp; A simple straightforward test in which the ONLY component changed was the plastic tip on the bullet, and the consequence was an improvement in bullet BC value.&nbsp; Heat may transfer from the jacket of the bullet to the base of the plastic tip, but that heat will not conduct forward thru the plastic tip it to the leading surface of the plastic tip during the short time in flight.&nbsp; The heating of the leading portion of the plastic tips is most certainly due to the heat of friction against the air at high bullet velocity.&nbsp; This is where the ablation of plastic blunts the tips and degrades bullet BC value.</blockquote>

[QUOTE="Pdvdh, post: 1149366, member: 4191"] The giddiness over these bullets is leading to some over-thinking, IMO. I give Hornady the benefit of the doubt based on the information they've provided. Didn't they seat both their old tips and new tips in the identical bullets, and then measure the improved downrange velocity? A simple straightforward test in which the ONLY component changed was the plastic tip on the bullet, and the consequence was an improvement in bullet BC value. Heat may transfer from the jacket of the bullet to the base of the plastic tip, but that heat will not conduct forward thru the plastic tip it to the leading surface of the plastic tip during the short time in flight. The heating of the leading portion of the plastic tips is most certainly due to the heat of friction against the air at high bullet velocity. This is where the ablation of plastic blunts the tips and degrades bullet BC value. [/QUOTE]

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