Re: Which ACOG for LR w/223
The proper model is the TA-31 F for M16, however, that assumes you're shootin' something like M855. Your WOA, I suspect, has a .223 chamber instead of a 5.56 chamber, so, unless you're handloading, you won't get BDC to be exact, not that it's ever exact anyway. Remember, the ACOG is about rangefinding/BDC in a heartbeat, with center of mass holds on E sized targets. With no holdover or rangefinding math going on in your head you can concentrate on your wind favor and addition/subtraction movement formula. Also, remember a very consistent stockweld is demanded by the ACOG as it is not parallax free. Accounts of 15 inches and more of perspective of aim divergence are known at 600 meters with the ACOG.