Found today in a 20rd box of Hornady Critical Duty 9mm is this 18 dated headstamp which I had not seen before. I suppose it must be at least 6 months old at this point, probably at least 7 or 8 months old. This particular lot of Critical Duty was something which had only recently showed up at the distributor Ellett Brothers, and so must have been sitting around for some months with Hornady earlier in the year? I know Hornady markets the Critical Duty for L.E. in 50rd boxes, and perhaps these are a remnant of that production where they wanted dated headstamps for some L.E. contract stuff? Hornady tries very hard to keep the 50rd boxes limited to L.E. distribution, but I occasionally find them for sale (the price per rd is much better). The 20rd box like the one I have is usually the only way civilians come across this ammo type.