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Hunting
The Basics, Starting Out
Why do bullet makers ignor .257 and .277?
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<blockquote data-quote="bigngreen" data-source="post: 553315" data-attributes="member: 13632"><p>The main issue with the 25 and 270 cal is the chosen common twist rate, it's hard to push a bullet maker to make a bullet for only custom barrel twists. That said Matrix is doing that with these cals, and there are some others coming. </p><p></p><p>High BC bullets are overall longer but they generally have less bearing surface compared to a comparable flat base bullet due to the long ogive and long boat tail. I've loaded a lot of 140 Accubonds and Bergers in my 270 WSM and the Berger builds less pressure and speed due to so much less bearing surface.</p><p></p><p>As far as hydrostatic shock goes, a good many are just shooting beyond the range where a bullet will have enough velocity to blow and cause massive hydrostatic shock, most are killing the old fashioned way by blowing a hole through the pump or lungs or through the spine and relying on direct bullet or fragmented bone to do the damage.</p></blockquote><p></p>
[QUOTE="bigngreen, post: 553315, member: 13632"] The main issue with the 25 and 270 cal is the chosen common twist rate, it's hard to push a bullet maker to make a bullet for only custom barrel twists. That said Matrix is doing that with these cals, and there are some others coming. High BC bullets are overall longer but they generally have less bearing surface compared to a comparable flat base bullet due to the long ogive and long boat tail. I've loaded a lot of 140 Accubonds and Bergers in my 270 WSM and the Berger builds less pressure and speed due to so much less bearing surface. As far as hydrostatic shock goes, a good many are just shooting beyond the range where a bullet will have enough velocity to blow and cause massive hydrostatic shock, most are killing the old fashioned way by blowing a hole through the pump or lungs or through the spine and relying on direct bullet or fragmented bone to do the damage. [/QUOTE]
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The Basics, Starting Out
Why do bullet makers ignor .257 and .277?
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