I took my time today at the range and worked to get my sights adjusted so that the hits were centered on the bullseye at 25 yards. When I finished, the scores on my last targets (NRA Official 50ft Timed and Rapid Fire Pistol Target - 25 Rounds) were as follows:

Iron Sights (Carry Handle) - 246
BSA Red-Dot (Crosshair) - 247
BAS Red-Dot (2 MOA Dot) - 249

The 10 ring on this target is 1-3/4" in diameter.