14-05-2014, 04:34 AM
If the measurement between scope centreline and barrel centreline was actually .61 inches, this could mean that Frazier actually told the truth about something.
If the separation was .61 inches (or .6) and the bullet was impacting 1 inch to the right of the point of aim at 15 yards, this would tell us the bullet path and line of sight were on diverging paths, going away from each other, and had become .4 inch further apart in 15 yards. Extrapolation to 100 yards is then simple.
0 yards = .6
15 yards = 1.0
30 yards = 1.0 + .4 = 1.4
45 yards = 1.4 + .4 = 1.8
60 yards = 1.8 + .4 = 2.2
75 yards = 2.2 + .4 = 2.6
90 yards = 2.6 + .4 = 3.0
105 yards = 3.0 + .4 = 3.4 inches to the right of the point of aim
Coincidentally, Frazier testifies the bullets were impacting 3-5 inches to the right of the point of aim at 100 yards.
If the distance between barrel and scope centrelines was 1 inch, and the bullets were impacting the 15 yard target 1 inch to the right of the point of aim, this would tell us the line of sight and bullet path were parallel lines, and the bullets should still be impacting 1 inch to the right of point of aim at 100 yards, or any longer range right out to infinity (minus wind drift, of course).
If, for the sake of argument, the barrel and scope centrelines were 1.5 inches apart, and the bullets were impacting 1 inch to the right of point of aim at 15 yards, the line of sight and bullet path would be converging lines, and would cross each other well before the 100 yard target.
0 yards = 1.5
15 yards = 1.5 - .5 = 1.0
30 yards = 1.0 - .5 = .5
45 yards = .5 - .5 = 0.0 (zeroed accurate point. also crossover point)
60 yards = 0.0 - .5 = -.5
75 yards = -.5 minus .5 = -1.0
90 yards = -1.0 minus .5 = -1.5
105 yards = -1.5 minus .5 = -2.0
This rifle would be shooting 2 inches to the left of point of aim at 105 yards. As the range grew, for every 45 yards this rifle would shoot another 2 inches to the left of point of aim. For example, at 195 yards, it would be impacting the target 6 inches to the left of point of aim.
If the separation was .61 inches (or .6) and the bullet was impacting 1 inch to the right of the point of aim at 15 yards, this would tell us the bullet path and line of sight were on diverging paths, going away from each other, and had become .4 inch further apart in 15 yards. Extrapolation to 100 yards is then simple.
0 yards = .6
15 yards = 1.0
30 yards = 1.0 + .4 = 1.4
45 yards = 1.4 + .4 = 1.8
60 yards = 1.8 + .4 = 2.2
75 yards = 2.2 + .4 = 2.6
90 yards = 2.6 + .4 = 3.0
105 yards = 3.0 + .4 = 3.4 inches to the right of the point of aim
Coincidentally, Frazier testifies the bullets were impacting 3-5 inches to the right of the point of aim at 100 yards.
If the distance between barrel and scope centrelines was 1 inch, and the bullets were impacting the 15 yard target 1 inch to the right of the point of aim, this would tell us the line of sight and bullet path were parallel lines, and the bullets should still be impacting 1 inch to the right of point of aim at 100 yards, or any longer range right out to infinity (minus wind drift, of course).
If, for the sake of argument, the barrel and scope centrelines were 1.5 inches apart, and the bullets were impacting 1 inch to the right of point of aim at 15 yards, the line of sight and bullet path would be converging lines, and would cross each other well before the 100 yard target.
0 yards = 1.5
15 yards = 1.5 - .5 = 1.0
30 yards = 1.0 - .5 = .5
45 yards = .5 - .5 = 0.0 (zeroed accurate point. also crossover point)
60 yards = 0.0 - .5 = -.5
75 yards = -.5 minus .5 = -1.0
90 yards = -1.0 minus .5 = -1.5
105 yards = -1.5 minus .5 = -2.0
This rifle would be shooting 2 inches to the left of point of aim at 105 yards. As the range grew, for every 45 yards this rifle would shoot another 2 inches to the left of point of aim. For example, at 195 yards, it would be impacting the target 6 inches to the left of point of aim.
Mr. HILL. The right rear portion of his head was missing. It was lying in the rear seat of the car. His brain was exposed. There was blood and bits of brain all over the entire rear portion of the car. Mrs. Kennedy was completely covered with blood. There was so much blood you could not tell if there had been any other wound or not, except for the one large gaping wound in the right rear portion of the head.
Warren Commission testimony of Secret Service Agent Clinton J. Hill, 1964
Warren Commission testimony of Secret Service Agent Clinton J. Hill, 1964