Is it possible to shrink Luger wood grips?

[ithacaartist]

G.T. has hit this one right on the button. Moisture of any sort will interfere with the dimensions of most woods, to whatever degree. The coat of boiled linseed oil seals out moisture, but if the wood is not totally dry when the finish is applied, then the oil tends to seal the moisture in! Along with a little patience, a warm, dry place will do the job, although the finish will impede the process slightly.