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Discussion in 'Long Range Hunting & Shooting' started by Zukman, Jul 29, 2011.
Where do i measure to get distance for data input
Center of bore, to center of glass.
Don't get too wrapped up in this figure. It doesn't make a lot of difference. I just went to http://www.vortexoptics.com/content/lrbc and entered the following info:
Factory Ammo - Black Hills Gold .308 Win 168gr AMax
100 yard zero
45 degrees, 58% humidity, 25.47" pressure
Scope height - 1.5" - 1,000 yard drop = 35.5 moa
Scope height - 2.0" - 1,000 yard drop = 35.1 moa
Try it for yourself. I leave the scope height at the 1.75" default anymore. Worry about reading the wind and not scope height in tenths of inches. One less thing to worry about.