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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 bullet BC results from Snipers Hide
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<blockquote data-quote="BryanLitz" data-source="post: 589445" data-attributes="member: 7848"><p>Jon,</p><p></p><p>At the ranges we're talking about (1500+) and more importantly, at ranges where the bullet slows to transonic speeds (below about 1340 fps), the need to determine the 'custom drag' of a particular bullet becomes more important for accurate trajectory prediction.</p><p></p><p>Shooter does allow for piece-wise defined BC's, both G1 and G7; as many as you care to input.</p><p></p><p>There is another program (mobile app) currently under development that I'm more directly involved in. This 'Applied Ballistics' app will have the ability to use 'custom drag curves' for a number of long range bullets. These custom curves are in no way related to any 'G' standard, so BC's are out the window all together. Rather, these custom drag curves will represent the exact drag of each bullet at each and every speed. </p><p>Furthermore, the Applied Ballistics app will allow the user to define and apply one of 3 modes of 'Ballistic Calibration' in which the user enters range/observed drop and the program adjusts either: MV, drag, or drop over the defined range so the solution is matched exactly to a users system. This is similar to the 'trajectory validation' feature of exbal, except it allows 3 different modes, and can handle up to 3 pairs of range/drop pairs.</p><p></p><p>For shooting out to and even beyond 1000 yards, G7 BC's are plenty accurate enough to give reliable trajectories. However, at extended ranges where the bullet starts approaching and going thru transonic, custom curves and ballistic calibration will help improve the accuracy of trajectory predictions.</p><p></p><p>This new app will be available by mid Jan (NRA SHOT Show) for android, with an iPhone version soon after, and eventually a windows mobile and blackberry versions are planned as well. The program will have many other new features but I'm only 'leaking' the ones relevant to this discussion for now.</p><p></p><p>Take care,</p><p>-Bryan</p></blockquote><p></p>
[QUOTE="BryanLitz, post: 589445, member: 7848"] Jon, At the ranges we're talking about (1500+) and more importantly, at ranges where the bullet slows to transonic speeds (below about 1340 fps), the need to determine the 'custom drag' of a particular bullet becomes more important for accurate trajectory prediction. Shooter does allow for piece-wise defined BC's, both G1 and G7; as many as you care to input. There is another program (mobile app) currently under development that I'm more directly involved in. This 'Applied Ballistics' app will have the ability to use 'custom drag curves' for a number of long range bullets. These custom curves are in no way related to any 'G' standard, so BC's are out the window all together. Rather, these custom drag curves will represent the exact drag of each bullet at each and every speed. Furthermore, the Applied Ballistics app will allow the user to define and apply one of 3 modes of 'Ballistic Calibration' in which the user enters range/observed drop and the program adjusts either: MV, drag, or drop over the defined range so the solution is matched exactly to a users system. This is similar to the 'trajectory validation' feature of exbal, except it allows 3 different modes, and can handle up to 3 pairs of range/drop pairs. For shooting out to and even beyond 1000 yards, G7 BC's are plenty accurate enough to give reliable trajectories. However, at extended ranges where the bullet starts approaching and going thru transonic, custom curves and ballistic calibration will help improve the accuracy of trajectory predictions. This new app will be available by mid Jan (NRA SHOT Show) for android, with an iPhone version soon after, and eventually a windows mobile and blackberry versions are planned as well. The program will have many other new features but I'm only 'leaking' the ones relevant to this discussion for now. Take care, -Bryan [/QUOTE]
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