If you have a look at Dr Vanezis' Report dated 26 November 1985 at page 1. PV/2 is a flattened bullet recovered from Nevill's left arm.
http://miscarriageofjustice.co/index.php?topic=204.0
I think PV/2 was the bullet that fractured the left humerus (comminuted fracture of the upper third of it).
This was recovered from the soft tissue near the fracture site.
I think I have got this now Myster. There were in fact two bullet strikes on Nevill's left arm.
The first being the one which hit the arm just below the shoulder and is referred to as PV/2.
The second being the one which grazed his arm and was deflected into his chest cavity and fractured. This bullet was not recovered although seen on x-ray.
I take it then that it was this second bullet which made the gouge mark on Nevill's left arm?
You were probably right first time with the gouge mark being made by a sharp object, i.e. some part of the rifle, rather than a bullet.
And if that was the left forearm like you suggested and I agreed with, then it couldn't have been bullet wound number 8 because this was located 4" above the left elbow, which I take to mean in the biceps area of the upper arm.
Vanezis noted bullet 8 in the diagram caused an 'oblique grazing wound' but that in the photo looks more like a puncture wound.
If you refer to the site I linked to above there were two images of bullet graze wounds, or if you google images for 'graze gunshot wound' - you'll see that they tend to be long and shallow.
But to confuse the issue further Vanezis estimated this grazing wound to be only 1/2" which isn't long !
