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[Matthieu Verstraete <mjv500@york.ac.uk>]

An additional complication may come from the different units the kpoints 
are expressed in. There are
cartesian (bohr-1 or Angst -1) from your input this is not the case.
   and
reduced:
	1) wrt the primitive reciprocal lattice vectors you have 
chosen explicitly (abinit)
	2) wrt the conventional unit cell (may not be a problem in Sn but 
there are sometimes surprises). In this case the convention is either a 
hexagonal like unit cell or a rhombohedral one, unless I am mistaken.

I don't know by heart what xcrys uses/outputs

Matthieu

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Dr. Matthieu Verstraete                 mailto:mjv500@york.ac.uk
Dept. of Physics, University of York,     tel: +44 1904 43 22 08
Heslington, YO10 5DD York, United Kingdom fax: +44 1904 43 22 14