The BDC 600 reticle was designed specifically for the AR platform rifle in .223 Remington using a 55 grain polymer tipped bullet with a muzzle velocity of 3240 fps. The reticle was designed for a 100
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yard zero, with circles representing 200, 300, 400, 500 and 600 yards, with hash marks in between the circles for hold points of 250, 350, 450 and 550 yards as shown on the next page.
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Please note that your firearm may or may not match the information listed for bullet drop based upon the variables listed in the beginning of the manual.
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What if your choice of round in your AR rifle is the .308 Winchester? NO PROBLEM, just go to the Nikon Spot On website
(www.nikonhunting.com/SpotOn) and you can match your exact cartridge to the reticle. In fact, we highly recommend that you
check out the Spot On website as it will provide exact yardages that each circle represents, providing unparalleled ballistic data