12-04-2014, 03:40 AM
Well, I did a careful measurement on paper of the bullet designated in the photo as CE 399.
I drew a straight line parallel to the sides of the bullet and crossing the land impression in the vicinity of the cannelure. As the scale is rather large in this photo, I measured from the crossing of the land impression 12.7 mm (.5 inch) towards the nose of the bullet, and measured from the line to the land impression. I found it to be 1.4 mm, meaning that, in the length of 1 inch of the barrel, the bullet had been rotated 2.8 mm of its circumference.
Finding the distance the bullet in the photo travelled in the barrel to make one full spin should be as easy as finding the circumference of the bullet, in millimetres, and dividing by 2.8.
We know the Carcano 6.5mm bullet to be 6.8 mm in diameter and can multiply by pi (3.1416) to obtain circumference.
6.8 x 3.1416 = 21.36288 mm
21.36288 divided by 2.8 = 7.6296, meaning that the rifle the bullet was fired from had riflings with a rate of twist of 1:7.63. This means that, in 7.63", the bullet will make one complete spin.
Unfortunately for the FBI, the M91/38 6.5mm Carcano short rifle found on the 6th floor of the TSBD does not have a rate of twist of 1:7.63. Like all of the other 6.5mm short rifles made in 1940 (or most of them), it has a much slower rate of twist at 1:8.47.
The only thing close to this rifling are the Carcano long rifles and carbines with their progressive twist riflings. The long rifles had a final rate of twist of 1:7.94, while the final rate of twist for the carbines was 1:7.48.
There was definitely something fishy going on, and this proves beyond a doubt that the CE 399 seen in the photo was not fired from C2766, or any other 6.5mm Carcano short rifle.
Next: TWO CE 399's???????
I drew a straight line parallel to the sides of the bullet and crossing the land impression in the vicinity of the cannelure. As the scale is rather large in this photo, I measured from the crossing of the land impression 12.7 mm (.5 inch) towards the nose of the bullet, and measured from the line to the land impression. I found it to be 1.4 mm, meaning that, in the length of 1 inch of the barrel, the bullet had been rotated 2.8 mm of its circumference.
Finding the distance the bullet in the photo travelled in the barrel to make one full spin should be as easy as finding the circumference of the bullet, in millimetres, and dividing by 2.8.
We know the Carcano 6.5mm bullet to be 6.8 mm in diameter and can multiply by pi (3.1416) to obtain circumference.
6.8 x 3.1416 = 21.36288 mm
21.36288 divided by 2.8 = 7.6296, meaning that the rifle the bullet was fired from had riflings with a rate of twist of 1:7.63. This means that, in 7.63", the bullet will make one complete spin.
Unfortunately for the FBI, the M91/38 6.5mm Carcano short rifle found on the 6th floor of the TSBD does not have a rate of twist of 1:7.63. Like all of the other 6.5mm short rifles made in 1940 (or most of them), it has a much slower rate of twist at 1:8.47.
The only thing close to this rifling are the Carcano long rifles and carbines with their progressive twist riflings. The long rifles had a final rate of twist of 1:7.94, while the final rate of twist for the carbines was 1:7.48.
There was definitely something fishy going on, and this proves beyond a doubt that the CE 399 seen in the photo was not fired from C2766, or any other 6.5mm Carcano short rifle.
Next: TWO CE 399's???????
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