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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
? about ballistic programs
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<blockquote data-quote="Buffalobob" data-source="post: 278863" data-attributes="member: 8"><p>A 3% error in the chronograph requires a 13% adjustment in BC to compensate.</p><p>A 6% error in the chronograph requires a 32% adjustment in the BC to compensate.</p><p></p><p></p><p>That is why I do not own a chronograph. I have no data to dispute my word when I decide to exaggerate my muzzle velocities. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p></p><p>In my testing of the Nosler 160 AB in a 7mm Wby out to a 1000 yards, I found the BC and the advertised top MV to be exaggerated by Nosler. Unfortunately (or otherwise) when I converted that rifle to a different caliber I erased all the computer files on the 7mm Wby so I do not have my exact numbers anymore except to remember them as being slightly low.</p><p></p><p>I find that the 115 Berger in 6mm is almost exactly the old published value out to 1K but with my methods I would not really be able to discern the small adjustments BSL made to the BC to say whether he is right or I am right. Perhaps if I let my daughter shot the groups so they were tighter I would be able to reduce the shooter error inherent in shooting drops. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="Buffalobob, post: 278863, member: 8"] A 3% error in the chronograph requires a 13% adjustment in BC to compensate. A 6% error in the chronograph requires a 32% adjustment in the BC to compensate. That is why I do not own a chronograph. I have no data to dispute my word when I decide to exaggerate my muzzle velocities. :D In my testing of the Nosler 160 AB in a 7mm Wby out to a 1000 yards, I found the BC and the advertised top MV to be exaggerated by Nosler. Unfortunately (or otherwise) when I converted that rifle to a different caliber I erased all the computer files on the 7mm Wby so I do not have my exact numbers anymore except to remember them as being slightly low. I find that the 115 Berger in 6mm is almost exactly the old published value out to 1K but with my methods I would not really be able to discern the small adjustments BSL made to the BC to say whether he is right or I am right. Perhaps if I let my daughter shot the groups so they were tighter I would be able to reduce the shooter error inherent in shooting drops. :D [/QUOTE]
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? about ballistic programs
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