I used to zero my 556 rifles at 100 yds, because that was how I was taught to do so.
A friend recently sent me this chart and 50 seems to be a much better option.
I recently zeroed my ACR at 50 yards and was really pleased with how easy it was to have the +/- 2 inches up to 225 yards was.
I'm not a "expert" marksman, but I can shoot, and was wondering why most classes out there favor the 100 yard zero?
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