Lots of good info here guys! I've been wondering how to do this myself. I have to figure out 25m bzo on new M4.
What I am wondering is.....I just recently did an Appleseed shoot,of course my zero was not there, my fault, anyway, I couldn't see the distant (mini) targets thru the .030 rear hooded sight either. My eyeballs are old too,48. So, I just put in a BJones system and the rear aperture sight is now 042.
So....did I change the 1/4 moa adjustments by putting this larger aperture on the rear sight?
Thanks,
Rikman rifleman in training ;-)