RCBS Neck Sizing/Dillon Full Length 223/5.56 (North Las Vegas) 7-21-2020

All my .223 brass has been sorted by head stamp. The Remington brass is once fired by myself and not other peoples range brass. Almost the entire amount fell within +/- .004" of minimum trim length which is 1.750" and most of it fell under. I doubled checked what my analog calipers were telling me by using my Mitituyo digital calipers that I didn't show in the video. Also, it is very important to use a head space/case gauge. Even though the brass length measures correctly with calipers... this does not mean that the head space is correct unless you use the gauge too! I checked every piece of brass with the gauge and will random sample by chamber testing the brass with a couple of my AR's.