The EOTech 2-2 reticle is designed for a 50-200 zero on the center dot, with a corresponding ~500 yard zero on the lower dot.
Does anyone know where the lower dot zeros if the center dot is zero’d at 100? I realize the answer is ammo and barrel dependent. If you could share your experience I’d appreciate it.
I will tag this thread because I am interested as well, and there are some fantastic knowledge droppers on here.
The second dot is 2.8 mils or 9.7 moa lower than the first dot. You should be able to figure out at 2hat distance the second dot is with whatever ammo type you use with those numbers.
The answer is 500 yards +/- 5 inches
Zeroing center dot at 100 will have same effect on lower dot. If you adjust the center dot 1 inch (from 50 to 100 yard zero) you also adjusted your lower dot 1 inch @ 100. 500 yards will equal a 5 inch POI change.
Thanks. I ran the numbers quick 'n dirty using Ballistic on my iPhone for a Hornady 55 gr FMJ at 3125 fps, sea level 59F. I fooled around with the velocity until I matched the factory trajectory spec you quoted.
With at 200 yd zero 500 yards calculated drop was 9.7 moa - right on spec
with 100 yd zero, same conditions, I got a 9.7 moa drop at 475 yds.
My real world answers will be a bit different because I don’t load them that hot, especially from a 16" barrel. But I can figure it out from here.
For instance, if I drop the velocity to 2800 with my 100 yd zero, same conditions, 9.7 moa drop occurs at about 420 yds.
Thanks.