Actually, hitting two cops in a line of cops at about 100 yds. isn’t too difficult even with a hand gun. At that distance they all look like one mass. As in the Civil War, just aim at the line and drop the rounds in at the right elevation. Somebody’s likely to be in the way and get hit. That’s why, in basic infantry training, they drum it into the troops to spread out.
Probably you are right; Occam's razor was proposed for a good reason.