Personally, I would not want to shoot a bullet that heavy in a 223 due to a really poor trajectory at ranges of 300 yards and shorter........
The 75gr .224 AMAX has the same bc as a 165gr .308 Hornaday BTSP. So think of it this way.....it pretty much matches up with a .308 Winchester shooting 165gr pills, which isn't very troublesome for 300 and less. The longer the shot, the more you'll see the 75gr help rather than hinder.
JCM
