I gather from your response that you are assuming that it is the holes in the clothing rather than in the body that determines where the bullet struck. Why?
You gather incorrectly.
Go back and look at the images. It is clear the hole in JBC's jacket is way below the wrist position. There is no way you can explain it away. You can only deny the obvious.
Or are you suggesting that the yellow dot matches the location of JBC's right nipple?
The dot represents the bullet hole in JBC's jacket
I would also point out that the jacket cuff had bullet hole 1/2 inch wide and 3/8 inch from the end of the sleeve:

Since that sleeve end is not seen, we cannot be sure exactly where it was.
picture sharingThe cuff of JBC's jacket is clearly seen.
I've put on an arrow to help.
It is interesting to note that the shirt cuff had two holes. One hole went from 1/2 inch above the end of the shirt cuff (3 inches from the cuff fold edge) to the end of the cuff (2.5 inches from the cuff fold edge).
If you go 3 inches down from the end of the french cuff and on the side next to the chest, that appears to be where the bullet struck. The bullet appears to have fragmented on striking the radius and the fragments deflecting off the back of the radius passed through the middle of the cuff causing a large irregular tear.
The other hole in the shirt sleeve was a very jagged horizontal hole whose edge was 1 inch from the end of the cuff fold and the other edge was 1 inch from the end of the french cuff (ie. about 2.5 inches from the cuff end):

Without realising it you've provided the third piece of evidence highlighting the impossibility of a shot around z270.
In the image above it is clear the end of the jacket sleeve and the french cuff of his shirt don't line up in a way that explains the holes in each. JBC's jacket sleeve is too far down, there is too much of the shirt sleeve showing.
In the above image it is possible to determine where the radius is (at the point where his wrist is flexing, up near the tie knot). The jacket sleeve is a good few inches below this point.
How is it possible for a bullet entering the sleeve of the jacket to shatter the radius?
Answer - it's not.