HSCA Testimony of Boswell :-
"Dr Boswell- But not much. because this bone all gone and actually the
smaller fragment fit this piece down here—there was a hole here, only half of
which was present the bone that was intact. and this small piece then fit right
on there and the bevelling was on the interior surface."
Two points : - Boswell is stating that 'half' the hole on the rear of skull was intact and another piece (not present initialy) 'fit right on there'
Secondly, he is stating the bevelling was on the interior surface. He may have lied, other fragments (Harper) may have bevelling on the outer surface, but Boswell most certainly is claiming there was a low entrance wound, above which was a SPACE that needed filling with later arriving bone.