  We present an analysis of the X-ray emission of the supernova remnant
MSH14-63, which was partially covered by four observations with XMM-Newton. The
detection of Fe K emission at 6.4 keV, and the lack of spatial correlation
between hard X-ray and radio emission is evidence against a dominant X-ray
synchrotron component. We argue that the hard X-ray continuum is best explained
by non-thermal bremsstrahlung from a supra-thermal tail to an otherwise cool
electron gas. The existence of low electron temperatures, required to explain
the absence of line emission, is supported by low temperatures found in other
parts of the remnant, which are as low as 0.2 keV in some regions.
