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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
High BC Bullet Gap
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<blockquote data-quote="RockyMtnMT" data-source="post: 1177730" data-attributes="member: 7999"><p>I can say that in the quest to make high bc bullets it is not as simple as just making a long pointy bullet. As a manufacture you have to look at how many people can shoot the thing. There has to be enough twist. Standard twist for the masses is 1-10". Bartlein only shows a 1-10" offering. Much of bc is made by weight, not just really slick looking. It will only get heavier by getting longer, assuming we want a pointed bullet. Then it can't stabilize. Now assume that we can get enough twist to stabilize a much longer bullet so that we can get the weight up. Now if there is too much bearing surface it will create more drag. So we shorten the bearing surface and make it longer yet in order to keep the weight needed to make high bc. Now we have a long high bc bullet that few can stabilize. A difficult bullet to get accuracy out of because it has so little bearing surface compared to total length that it is very finicky. So now we have a bullet that few have enough twist for and a certain percentage of those who do have enough twist will have accuracy problems.</p><p></p><p>So, all that being said, we will be happy to work with you to design your .257 bullet. We have one in the testing phase that we made for Kirby that looks great. This bullet is designed for a 1-7" twist and is about 135g. We would design a bullet for your twist, cartridge, and atmospheric conditions. We would require you to purchase the test bullets that we send to you and a minimum 1000 bullet order. We can get you where you want to go!</p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1177730, member: 7999"] I can say that in the quest to make high bc bullets it is not as simple as just making a long pointy bullet. As a manufacture you have to look at how many people can shoot the thing. There has to be enough twist. Standard twist for the masses is 1-10". Bartlein only shows a 1-10" offering. Much of bc is made by weight, not just really slick looking. It will only get heavier by getting longer, assuming we want a pointed bullet. Then it can't stabilize. Now assume that we can get enough twist to stabilize a much longer bullet so that we can get the weight up. Now if there is too much bearing surface it will create more drag. So we shorten the bearing surface and make it longer yet in order to keep the weight needed to make high bc. Now we have a long high bc bullet that few can stabilize. A difficult bullet to get accuracy out of because it has so little bearing surface compared to total length that it is very finicky. So now we have a bullet that few have enough twist for and a certain percentage of those who do have enough twist will have accuracy problems. So, all that being said, we will be happy to work with you to design your .257 bullet. We have one in the testing phase that we made for Kirby that looks great. This bullet is designed for a 1-7" twist and is about 135g. We would design a bullet for your twist, cartridge, and atmospheric conditions. We would require you to purchase the test bullets that we send to you and a minimum 1000 bullet order. We can get you where you want to go! Steve [/QUOTE]
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High BC Bullet Gap
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