I've had good luck with Win. Brass(others cuss it) i shoot in my 223 and the neck it up for my 6x45 and it has held up very well for me. I use it for my accuracy loads/target loads.
The ring around the primer pocket is a sure sign of a crimped primer pocket. If you can compare with a Rem or Win primer pocket. Just looked at some brass I have here, Military brass head stamped TW(Twin City ordinance Anoka, MN) and LC(Lake City munitions plant Minneapolis, MN) have crimped primers, civilian ammo FC(Federal Cartridge) and PMC(marked 223 Rem) have crimped primers, civilian ammo by Win and Rem(marked 223) do not have crimped primers) that's all I have laying around.