Just got in today my first ACOG TA11H for my JP Upper (18 inch Barrel). I'm looking around at trying to find out how to zero it, and I'm not finding anything definative. I want to start shooting 3-gun and rifle matches, but only have access to a 100 yard range, but need to get the BDC zerod. I'm running a JP 18 inch upper and looking to shoot PRVI 75gr ammo, at about 5-6000ft altitude here in the summer in Colorado. I also have some PRVI and Federal XM193. Just seems the PRVI 75gr is more consistent, and I have a couple thousand rounds. THe ACOG didn't have any manual with it ????
To get the BDC running right, where should the dot and the top of the Horseshoe set for the PRVI ammo. I haven't fired the upper yet, and I don't have a chrono or access to one.
Thanks!
PS. What are the actual measurements in the reticle? I read the dots are 5 mils apart? The distance is in meters? Where are the aim points in relationship to each other?