thats good to knowYep, 50yds is probably the best all around BZO for 5.56. It'll keep you point of aim-point of impact to 200yds and even out to 300yds with a slight 12 o'clock hold. That's the zero on my rifles and the steel at our range isn't safe, at 200 or 300 yards.
25 meter zero will set you for 300 meter zero. that is how the army does itthats good to know