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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ballistic coefficient on bullets
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<blockquote data-quote="Michael Eichele" data-source="post: 130999" data-attributes="member: 1007"><p>[ QUOTE ]</p><p> I've never taken any published BC info as anything other than a starting point. </p><p></p><p>[/ QUOTE ]</p><p></p><p>Thats about all a published BC is good for. A starting point. Also, the vast majority of shooters in general are never going to shoot past 400 yards anyway. It takes a pretty large error of a BC to drastically affect a 400 yard shot while a small amount of error is a clean miss on a deer at 1000 yards. Example: manufacture "X" publishes .500 for one of their bullets. You load em up and your computer tells you that at 400 yards you will be 28" low using .500 at your velocity in standard air density. 2550 MV. The reality is that your real world BC is .450 and the differance at 400 yards for the error is less than 1". Thats still a decent shot on a deer or a 2" bullseye for that matter. Move it out to 1K and.....its 38" off. Ooooops! Are they a good starting point most of the time? You betcha. Will they work at 1K without testing and verification, most of the time no as even a .010 error will result in a miss on a deer sized critter.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 130999, member: 1007"] [ QUOTE ] I've never taken any published BC info as anything other than a starting point. [/ QUOTE ] Thats about all a published BC is good for. A starting point. Also, the vast majority of shooters in general are never going to shoot past 400 yards anyway. It takes a pretty large error of a BC to drastically affect a 400 yard shot while a small amount of error is a clean miss on a deer at 1000 yards. Example: manufacture "X" publishes .500 for one of their bullets. You load em up and your computer tells you that at 400 yards you will be 28" low using .500 at your velocity in standard air density. 2550 MV. The reality is that your real world BC is .450 and the differance at 400 yards for the error is less than 1". Thats still a decent shot on a deer or a 2" bullseye for that matter. Move it out to 1K and.....its 38" off. Ooooops! Are they a good starting point most of the time? You betcha. Will they work at 1K without testing and verification, most of the time no as even a .010 error will result in a miss on a deer sized critter. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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ballistic coefficient on bullets
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