I've shot up around 200 rounds. They do go bang quite nicely. I've begun to save them but I've noticed a few things that have me concerned.
The cases aren't polished, the primers are lacquered so I can't tell if the ridge is from a crimp in the pocket or just some kind of strange staking of the primer. I've googlied it and I see a number of threads that proclaim the poor quality of the lake city brass (LCO head stamp) and the need to swage and de-burr the primer pockets if one intends to reload them. It also appears as though the letters after them XM193 only indicate the packaging: XM193F in 20 round boxes, XM193BK in bulk, etc. Otherwise the rounds themselves are the same.
I was wondering what the like of Sam and the other experienced dudes can tell the rest of us what they know and how much work it will be to load them, or if it's even worth it. One person already warned me that Federal brass is pooptie.