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What does it take to hit at a mile?
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<blockquote data-quote="royinidaho" data-source="post: 570859" data-attributes="member: 2011"><p>Hmmmm, It's late, I'm sleepy, but this was interesting to delve into.</p><p></p><p>Roughed out some JBM calcs and came up with the following.</p><p></p><p>1 MOA @ 1733 yds is about 17.33"</p><p></p><p>Your gong is 15" diameter or about 0.86 MOA or +/- 0.43 MOA from center of gong.</p><p></p><p>ES of 17 FPS = about +/- 9" (Italian math. . . )</p><p></p><p>Or 2806 Min and 2824 Max MV.</p><p></p><p>Assuming a bc =0.77 (works for me at 4488' ASL and "certain enviro. conditions)</p><p></p><p>This comes out to be about +/- 0.45 MOA spread due to velocity or about </p><p></p><p>Therefore, by my calculations (Italian math again) with a target of +/- 0.43 MOA and a consistency of +/- 0.45 MOA due to velocity my recommendations are the following to hit your gong.</p><p></p><ol> <li data-xf-list-type="ol">Shoot more shots. (increase your odds<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />)</li> <li data-xf-list-type="ol">Use at least 20" target <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></li> <li data-xf-list-type="ol">The over/under shots are due to velocity differences (Whatcha do about that? I dunno.)</li> <li data-xf-list-type="ol">The left/right shots are due to wind. (Set down-range wind flags.)</li> <li data-xf-list-type="ol">Up the velocity to about 3300, with the same accuracy and more of those left/right shots will be hits. (Hint, much larger cartridge. Italian thinkin' again<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" />)</li> <li data-xf-list-type="ol">Go to Shawn's or Darrell's class.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></li> </ol><p>The above list is intended to be at least a little humorous. Hey, I at least tried.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p><p></p><p></p><p>You're shooting very near the capability of your system. You'll find that 90% of the expense of anything is expended on the final 10% of progress.</p><p></p><p></p><p>You're darn close but the learning curve gets steeper from where you are.</p><p></p><p></p><p>If, this is your first stretch to 1 mile, you're doing pretty darn good!</p></blockquote><p></p>
[QUOTE="royinidaho, post: 570859, member: 2011"] Hmmmm, It's late, I'm sleepy, but this was interesting to delve into. Roughed out some JBM calcs and came up with the following. 1 MOA @ 1733 yds is about 17.33" Your gong is 15" diameter or about 0.86 MOA or +/- 0.43 MOA from center of gong. ES of 17 FPS = about +/- 9" (Italian math. . . ) Or 2806 Min and 2824 Max MV. Assuming a bc =0.77 (works for me at 4488' ASL and "certain enviro. conditions) This comes out to be about +/- 0.45 MOA spread due to velocity or about Therefore, by my calculations (Italian math again) with a target of +/- 0.43 MOA and a consistency of +/- 0.45 MOA due to velocity my recommendations are the following to hit your gong. [LIST=1] [*]Shoot more shots. (increase your odds:)) [*]Use at least 20" target :) [*]The over/under shots are due to velocity differences (Whatcha do about that? I dunno.) [*]The left/right shots are due to wind. (Set down-range wind flags.) [*]Up the velocity to about 3300, with the same accuracy and more of those left/right shots will be hits. (Hint, much larger cartridge. Italian thinkin' again:rolleyes:) [*]Go to Shawn's or Darrell's class.:) [/LIST] The above list is intended to be at least a little humorous. Hey, I at least tried.:rolleyes: You're shooting very near the capability of your system. You'll find that 90% of the expense of anything is expended on the final 10% of progress. You're darn close but the learning curve gets steeper from where you are. If, this is your first stretch to 1 mile, you're doing pretty darn good! [/QUOTE]
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What does it take to hit at a mile?
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