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twenty-five percent rectangle (twenty–five percent rectangle (A) A rectangle, eight probable deflection errors wide and one range
probable error deep, within which will fall 25 percent of a large number of shots fired with the same setting. One range limit of this rectangle is the center of impact of a large number of shots fired with the same setting. There are two 25 percent rectangles, one on either side of the center of impact. These two rectangles form the 50 percent rectangle  fas.org) | |||