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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Let's argue about BC's
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<blockquote data-quote="paphil" data-source="post: 475784" data-attributes="member: 17745"><p>My main concern in setting up a drop chart is producing numbers from the data that exactly fit the flight of the bullet. That bullet comes with a specific shape that gives it a specific BC. To be useful to the gun operator, the bullet is exposed to a huge explosion and high pressure and is forced down a tight twisted tube, putting it under extreme stress. If that bullet shape changes in the slightest amount from those forces, so does the BC . I understand the new Berger 338 300 grain experienced such problems in development and had to have a stiffer jacket to prevent such deformation. I,m sure Brian could shed some light on that. Give me my gun and a turret for 5000 feet and using a few basic rules of thumb taught in our shooting schools and Iwill be able to shoot from 0 -10,000 feet and out to 1000 yards without using any calculator. It is all in getting set up correctly.</p></blockquote><p></p>
[QUOTE="paphil, post: 475784, member: 17745"] My main concern in setting up a drop chart is producing numbers from the data that exactly fit the flight of the bullet. That bullet comes with a specific shape that gives it a specific BC. To be useful to the gun operator, the bullet is exposed to a huge explosion and high pressure and is forced down a tight twisted tube, putting it under extreme stress. If that bullet shape changes in the slightest amount from those forces, so does the BC . I understand the new Berger 338 300 grain experienced such problems in development and had to have a stiffer jacket to prevent such deformation. I,m sure Brian could shed some light on that. Give me my gun and a turret for 5000 feet and using a few basic rules of thumb taught in our shooting schools and Iwill be able to shoot from 0 -10,000 feet and out to 1000 yards without using any calculator. It is all in getting set up correctly. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Let's argue about BC's
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