I think you may have something there with the lot numbers. I have a 200+ round inventory from 4 different lot numbers, so it made me uneasy that 80 came from a lot I hadn't tested yet.
Went to the range today and as expected, the Critical Defense had a 100% performance. Beyond that, I fired off 2 magazines of American Eagle and couldn't hit the targets (pie plate size) at all. I was 22 yards away, which is farther than I usual like for the Rohrbaugh, but the range was crowded and I didn't trust standing closer.
Anyway, after missing with the American Eagle I put in a magazine of CD. I went bang seven times and knocked over seven targets! Hmmm. I've said it is more accurate than other ammo (at least in my hands), but that sure impressed the hell out of me.
Hornady's a keeper in my book.