About the remarks in video concerning the unusual case head markings & a possible crack: I have two different lots (200 cases in each lot) of new Hornady 6.5 Grendel brass. One lot seems to be clear of any defects in its case heads... no unusual weird lines, wrinkles or cracks around the head stamp. The other lot does have some weird markings where the head stamps are. These markings appear to be embossed into the brass the same as the case ID head stamp. My guess is, when these cases were stamped, there was some brass debris in the stamping machine. When stamped, the debris outline was embossed into the case rim along with the cartridge ID. In a couple of cases, this debris was still present & pressed into the case rim. Those bits of debris were easily cleared from the case with the tip of an X-ACTO knife. I tried to take some photos of these markings but couldn't get a picture with enough clarity to show them.
The trick is growing up without growing old. -- Casey Stengal