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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger Bullets Announces Launch of a New Ammo Company
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<blockquote data-quote="cohunter14" data-source="post: 983537" data-attributes="member: 55580"><p>Yes, wind drift is the other piece of the puzzle on BC's. So again, isn't having a bunch of people out shooting these bullets in real world conditions and verifying the BC better than a scientific compulation of it? Yes, things can vary and some scopes might not track properly, but that can be measured. Most good shooters check that before shooting at any substantial range.</p><p> </p><p>Here is an example of what I am saying. Take the .308 230 Hybrid of Berger's through a 300 RUM at 2,900 fps. I know a lot of people have used this combo and have shot it to some extreme distances, so it should be a good example. Using Berger's G1 BC of .743, here are the results:</p><p> </p><p>5,000 feet altitude, 45 degrees, 10 mph crosswind at 3 o'clock.</p><p> </p><p>1,000 yards: 223.4" of drop, 42" of wind drift</p><p>1,500 yards: 652.8" of drop, 105.7" of wind drift</p><p> </p><p>If you take that same bullet and reduce the BC by 8%, as you say most are off by at least that, you get a G1 of .684. Here are those results:</p><p> </p><p>1,000 yards: 230" of drop, 46.5" of wind drift</p><p>1,500 yards: 687.5" of drop, 118.2" of wind drift</p><p> </p><p>My point is that those changes are drastic and definitely measurable. At 1,000 yards, you have got a difference of 6.6" of drop and 4.5" of wind drift. At 1,500 yards, those numbers go to 34.7" of drop and 12.5" of drift.</p><p> </p><p>This is just an example, but it shows that 8% is a drastic change. With how many people are out there shooting these bullets well beyond 1,000 yards and justifying the BC, I think it is going to be difficult to find a way to say that these numbers are off by that much, no matter what testing you do. All that really matters is real world results.</p></blockquote><p></p>
[QUOTE="cohunter14, post: 983537, member: 55580"] Yes, wind drift is the other piece of the puzzle on BC's. So again, isn't having a bunch of people out shooting these bullets in real world conditions and verifying the BC better than a scientific compulation of it? Yes, things can vary and some scopes might not track properly, but that can be measured. Most good shooters check that before shooting at any substantial range. Here is an example of what I am saying. Take the .308 230 Hybrid of Berger's through a 300 RUM at 2,900 fps. I know a lot of people have used this combo and have shot it to some extreme distances, so it should be a good example. Using Berger's G1 BC of .743, here are the results: 5,000 feet altitude, 45 degrees, 10 mph crosswind at 3 o'clock. 1,000 yards: 223.4" of drop, 42" of wind drift 1,500 yards: 652.8" of drop, 105.7" of wind drift If you take that same bullet and reduce the BC by 8%, as you say most are off by at least that, you get a G1 of .684. Here are those results: 1,000 yards: 230" of drop, 46.5" of wind drift 1,500 yards: 687.5" of drop, 118.2" of wind drift My point is that those changes are drastic and definitely measurable. At 1,000 yards, you have got a difference of 6.6" of drop and 4.5" of wind drift. At 1,500 yards, those numbers go to 34.7" of drop and 12.5" of drift. This is just an example, but it shows that 8% is a drastic change. With how many people are out there shooting these bullets well beyond 1,000 yards and justifying the BC, I think it is going to be difficult to find a way to say that these numbers are off by that much, no matter what testing you do. All that really matters is real world results. [/QUOTE]
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Berger Bullets Announces Launch of a New Ammo Company
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