Here's a little bit of info.
turkmain
K.Kale's are one of the better Turk's as far as quality goes. I've seen 1903's 03/38's and 1938's that had recieved improper heat treat and tended to be soft, have yet to hear of a K.K being soft. If you do buy, Please, have a competent gunsmith check the headspace and function of the rifle for safety reasons prior to firing it.
Google Turkish Mausers to find more info.