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Hunting
Long Range Hunting & Shooting
BC's vs velocity?
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<blockquote data-quote="load" data-source="post: 498921" data-attributes="member: 22789"><p>higher speed = higher resistance. </p><p>one problem u run into when shooting high bc bullets at high speeds is the appearance of a secondary shock wave at the shoulder of the bullet. the sharper the transition from ogive to bearing the worse the problem. this is one reason (besides most bullets dont fit the g1 curve anyway) sierra give multiple b.c.s' it is also why you see "hybreds" popping up instead of pure secant ogives. this problem is worse at sea level than at the mountain tops and can come and go accourding to barometric pressures causing sudden drops in bc and really throwing off a shot. if you are shooting high vld shapes keeping the velocity below 3000 fps (possibly even 2800 at sea level) can really help with this problem. this is most pronounced at shapes over 14 calibers of ogive but can be found even lower</p></blockquote><p></p>
[QUOTE="load, post: 498921, member: 22789"] higher speed = higher resistance. one problem u run into when shooting high bc bullets at high speeds is the appearance of a secondary shock wave at the shoulder of the bullet. the sharper the transition from ogive to bearing the worse the problem. this is one reason (besides most bullets dont fit the g1 curve anyway) sierra give multiple b.c.s' it is also why you see "hybreds" popping up instead of pure secant ogives. this problem is worse at sea level than at the mountain tops and can come and go accourding to barometric pressures causing sudden drops in bc and really throwing off a shot. if you are shooting high vld shapes keeping the velocity below 3000 fps (possibly even 2800 at sea level) can really help with this problem. this is most pronounced at shapes over 14 calibers of ogive but can be found even lower [/QUOTE]
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BC's vs velocity?
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