I may be telling on my self here, but I haven't measured a .223 case in years. I load mine to magazine length and have had nothing but great results. Of course, I now have batches of .223 in two different lengths as the CZ 527 allows for a longer length in their clips than any of the AR clips I have.
Rednecks... Keeping the woods critter-free since March 2, 1836. (TX Independence Day)
I'm going to use the words "clip" and "Long Colt" every chance I get. It grinds my gears to see new members attacked when we all know dang good and well what's being refered to.