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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="CatShooter" data-source="post: 138594" data-attributes="member: 7"><p>[ QUOTE ]</p><p> [ QUOTE ]</p><p> In short, when some programs shows downrange values beyond 2000 yards, my best educated estimate is that they rarely are confirmed by real firings. </p><p></p><p>[/ QUOTE ] </p><p></p><p></p><p>... Unless they shoot the same caliber with the same bullets with the same twist with the same powder and the same primers at the same velocities, firing test only benefit the shooter doing the test. </p><p></p><p>[/ QUOTE ]</p><p></p><p>So you say that if I'm shooting a 308 190gr SMK at 3000 fps, and I change powder and primer, and I'm still shooting a 190gr SMK at 3000 fps - my BC and ballistics change, and none of the previously data apply, all because I changed the primer and powder, but the velocity and bullet are the same???</p><p></p><p>... Hmmm that's first in ballistics.</p><p></p><p>That theory completely negates all the ballistic work done in the last 100+ years... and makes all the ballistic software useless, because there are no inputs for powder and primer.</p><p></p><p>Where did you get that "theory"?</p><p></p><p>Inquiring minds want to know /ubbthreads/images/graemlins/frown.gif</p><p></p><p>I have been shooting and loading for over 50 years, and started doing velocity measurements and shooting long range in the early 60's... I have never heard of such a "theory".</p><p></p><p></p><p>.</p></blockquote><p></p>
[QUOTE="CatShooter, post: 138594, member: 7"] [ QUOTE ] [ QUOTE ] In short, when some programs shows downrange values beyond 2000 yards, my best educated estimate is that they rarely are confirmed by real firings. [/ QUOTE ] ... Unless they shoot the same caliber with the same bullets with the same twist with the same powder and the same primers at the same velocities, firing test only benefit the shooter doing the test. [/ QUOTE ] So you say that if I'm shooting a 308 190gr SMK at 3000 fps, and I change powder and primer, and I'm still shooting a 190gr SMK at 3000 fps - my BC and ballistics change, and none of the previously data apply, all because I changed the primer and powder, but the velocity and bullet are the same??? ... Hmmm that's first in ballistics. That theory completely negates all the ballistic work done in the last 100+ years... and makes all the ballistic software useless, because there are no inputs for powder and primer. Where did you get that "theory"? Inquiring minds want to know [img]/ubbthreads/images/graemlins/frown.gif[/img] I have been shooting and loading for over 50 years, and started doing velocity measurements and shooting long range in the early 60's... I have never heard of such a "theory". . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Ballistics beyond 2000 yds : do we need/trust them?
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