I have an unopened case of ADCOM 5.56 from SG. This is the 62gn stuff. I bought 6K of this and have fired 3K with no issues other than a dented case here and there. Of the first 3K, I counted 19 dented cases with only one I didn't feel comfortable firing. The other cases were the '99 headstamp, so I'm sure this one is, too. I'm selling this to fund another project. I'm asking $200 FTF in NoVA or $220 shipped to the CONUS. Please let me know if you have any questions.