The lower target is the one that we use for the reduced 100 yard course to simulate the 300 yard standing to prone rapids. The completely black center is easier to see with iron sights.
Yeah, the white center is kind of annoying. I dont see why folks shouldnt be allowed to magic-marker in the center, doing so without obscure the scoring rings. Maybe use a red marker.
SR-21 is from my last match, score 83. Two tens are covered by the ruler (really!). Now if I can just get that group all in the black I'd score 90.