I looked more at the Nikon last night and saw they have a ballistics program to calculate drop for any caliber/bullet and it tells you the BDC for the round you're shooting, so that cements it a bit more.
ruffcutt- on the M223, what do you think of the turrets?
I like the Nikon turrets, not overly large, easy to read, they do turn quite easy but it hasn't been a problem of them getting bumped off the selected setting. I like to walk prairie dog towns and shoot off a standing tripod, shots can be as close as a few yards or several hundred yards from shot to shot, the turrets are as advertised "Rapid Action".