Hi Wayne,
I thought both the A-51 and A-33 NRA targets had graduated scoring.
Inner 10 ring to 1 ring on the A-51, and 10 ring to 1 ring on the A-33.
I'll send a pdf copy of all the NRA target dimensions in a few minutes so you can take a look.
BTW, my wife just drove thru Yankton a couple of hours ago and I told her to wave at you. LOL
Landy