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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Queston on Vortex scope w/BDC Reticle
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<blockquote data-quote="westcliffe01" data-source="post: 790402" data-attributes="member: 35183"><p>Magnum rifles shoot flatter. So it absolutely makes sense to use a 200 yard zero for them since there is hardly any drop from 100-200 yards. Also, by zeroing at 200 yards, you are raising the angle of the bore ever so slightly, which helps reduce the bullet drop (measured from the 200 yard mark) compared to having a 100 yard zero.</p><p></p><p>The thing with BDC reticles is that the spacing of the hold over lines is not uniform. They have tried to come up with a "universal" set of reference points to give you "sensible" target distances. Its all a compromise.</p><p></p><p>I don't know if Vortex has an interactive tool to use for determining what the lines mean for different scope magnifications and bullet trajectories. Nikons is the "Spot On" tool. I personally found working with a SFP reticle to be a pain in the butt since the values are only calibrated for maximum magnification. I also prefer having "straight" uniform increments on the reticle, for example ever tic = 2MOA. That way I tape my drop chart to the rifle and know which bar to hold for which distance, without needing to memorize anything.</p></blockquote><p></p>
[QUOTE="westcliffe01, post: 790402, member: 35183"] Magnum rifles shoot flatter. So it absolutely makes sense to use a 200 yard zero for them since there is hardly any drop from 100-200 yards. Also, by zeroing at 200 yards, you are raising the angle of the bore ever so slightly, which helps reduce the bullet drop (measured from the 200 yard mark) compared to having a 100 yard zero. The thing with BDC reticles is that the spacing of the hold over lines is not uniform. They have tried to come up with a "universal" set of reference points to give you "sensible" target distances. Its all a compromise. I don't know if Vortex has an interactive tool to use for determining what the lines mean for different scope magnifications and bullet trajectories. Nikons is the "Spot On" tool. I personally found working with a SFP reticle to be a pain in the butt since the values are only calibrated for maximum magnification. I also prefer having "straight" uniform increments on the reticle, for example ever tic = 2MOA. That way I tape my drop chart to the rifle and know which bar to hold for which distance, without needing to memorize anything. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Queston on Vortex scope w/BDC Reticle
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