Originally Posted by 1lostinspace
M-223 for 5.56? Not sure if you know the m-223 is based on a .223 ballistic tip 55 gr out .223 chamber. The BC will be off with M193 and M855
Nikons spot on calculator on their website has listing for almost every single load available, you pop it in, then zero your scope for what ever range you like, and it tells you where its going to hit out to every yardage you want.
My experience with it is things were only off 1-2 inches at most out to 500 yards. basically tells you 200 yards, top of second ring, 400 yards, bottom of 400 yard ring and so on. Its pretty spot on