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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistics beyond 2000 yds : do we need/trust them?
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<blockquote data-quote="Eaglet" data-source="post: 138674" data-attributes="member: 3756"><p>CatShooter,</p><p>Receive my apologies, I messed up!</p><p>On one of your comments you're strictly referring to only changing powder and primer. </p><p>On the following comment, the way it was worded I though you were talking about two different rifles instead of one; I should have known better and did mess up.</p><p></p><p> [ QUOTE ]</p><p>I say, if I shoot a 308 190gr SMK at 3000 fps with purple powder and purple primers, and my friend shoots a 308 190gr SMK at 3000 with red powder and red primers - THE SAME BULLET LEAVES THE MUZZLE AT THE SPEED - they will NOT have different BC's</p><p> </p><p></p><p>[/ QUOTE ]</p><p></p><p>Again, my bad!</p><p></p><p>Now, just for the sake of learning, if it's alright, I have a question for you or anyone else:</p><p></p><p>Facts: The only two things we're changing is primer and powder as stated by you. Using the same rifle, of course. /ubbthreads/images/graemlins/smile.gif</p><p></p><p>Question: Is it possible that the purple primer with the purple powder combination gives 3000 f/sec mv at very low chamber pressures, and the red primer with the red powder combination would give 3000 f/sec mv at very high chamber pressures and because of the extremes dynamics inside the chamber the bullet gets to be treated differently once it's in motion to the point that its flying ability changes enough to change the BC??? Is it possible? Even though the mv is still the same, there would be a different beast growling inside the chamber. Could that change our BC? Is it possible?</p><p></p><p>Gustavo, I apologize for deviating a bit. /ubbthreads/images/graemlins/smile.gif</p></blockquote><p></p>
[QUOTE="Eaglet, post: 138674, member: 3756"] CatShooter, Receive my apologies, I messed up! On one of your comments you're strictly referring to only changing powder and primer. On the following comment, the way it was worded I though you were talking about two different rifles instead of one; I should have known better and did mess up. [ QUOTE ] I say, if I shoot a 308 190gr SMK at 3000 fps with purple powder and purple primers, and my friend shoots a 308 190gr SMK at 3000 with red powder and red primers - THE SAME BULLET LEAVES THE MUZZLE AT THE SPEED - they will NOT have different BC's [/ QUOTE ] Again, my bad! Now, just for the sake of learning, if it's alright, I have a question for you or anyone else: Facts: The only two things we're changing is primer and powder as stated by you. Using the same rifle, of course. [img]/ubbthreads/images/graemlins/smile.gif[/img] Question: Is it possible that the purple primer with the purple powder combination gives 3000 f/sec mv at very low chamber pressures, and the red primer with the red powder combination would give 3000 f/sec mv at very high chamber pressures and because of the extremes dynamics inside the chamber the bullet gets to be treated differently once it's in motion to the point that its flying ability changes enough to change the BC??? Is it possible? Even though the mv is still the same, there would be a different beast growling inside the chamber. Could that change our BC? Is it possible? Gustavo, I apologize for deviating a bit. [img]/ubbthreads/images/graemlins/smile.gif[/img] [/QUOTE]
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Ballistics beyond 2000 yds : do we need/trust them?
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