PV2 was from the left shoulder and he says the bullet was virtually intact.

The wording above is "Appears to have hit a curved surface side-on. Nose - base and one side virtually intact", which is consistent with one side being flattened.
The initial examination of PV/3 described it as having extensive damage, which is consistent with it having around 80% of the weight of a whole bullet. An added note states "General & some detail match. Very Strongly suggestive of having been fired in (18)."
Fletcher describes this bullet as whole.
But then goes on to report the bullet was badly mushroomed.
Where does Fletcher describe it as whole? The wording in the general examination record is "Received: one fired .22 bullet:- damaged. . . . Bullet badly mushroomed".
PV/5 is described as "Very small fragment of bloodstained lead. NOV for matching purposes.
[NOV = Nothing Of Value, presumably.] This is from the General Examination Record that doesn't mention PV/11.
A separate record for PV/11 states "Virtually no detail suitable for matching . . . Unable to establish whether or not fired in (18)".

PV/8 is described as "badly damage", and its weight indicates it is far from whole. Where is it described as "nearly whole"?
You refer to a "fig3", "fig 5" and "fig 2 which is above 1", but you haven't posted any images above.
From its weight, PV/10 would have been about half of a bullet. On the record I have seen, the word "half" is not used, but a comment states "NO rifling suitable for comparison."