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I built wind tunnel models from the mid 70's to 1980. The company that I worked for, was doing R&D for both the Stealth and Cruise Missle projects, at that time. That is when I got into wing design for my Formula Atlantic race car. Pictured is the car and the wing I design of it. It's a Delta shaped wing made of fiberglass and tapers in all planes. I learned many things about air flow at that time and have been interested in it and studied it ever since. A bullet is nothing more than a round wing and obeys the same laws of psychics. The first thing you need to know, is that there is a huge difference between subsonic and supersonic flight. At subsonic velocitys the air has to flow around the nose and body of the bullet to have the best BC and ellipical bullets do that best. Any anomaly (such as a flat nose), can cause localized shock waves on the surface, hurting the BC and creating more pressure on the nose. In supersonic flight, you want as sharp a profile as can be had because you are now pushing that shock wave and the more that you can bend it back, the higher your BC will become because your bending that wave back. For a reference to this, you need to look at pictures of bullets pushing the shock wave, Lyman has some in there manuals. Shooting round, flat or ellipical noses at supersonic speeds, create broad shock waves and broad shock waves take more power to push than more > shaped shock waves. All shock waves take more power to push than subsonic, no shock wave flight, if you can maintain the laminar flow. Trucated nose shapes can be very effective if the angle is low and the flat, very small. High Mach, air planes shuch as the SR71 have a sharp point to their wing profiles. Wind drift is a direct product of the perentage of velocity lost and doesn't correlate to ToF, especially in subsonic flight. Now then accuracy is a whole different thing, any stabilized bullet shape can be accurate but, if you think that conditions won't move a low BC bullet more than a high BC bullet, you just wrong. People that say "I feel that" it moves less are just kidding themselfs and need to take a class in physical law. I would suggest that people that are interested in bullet shape, read up on aerodynamics both above and below the speed of sound. Frank
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