Thank you kuduae! Your knowledge and help is much appreciated.

It would seem that I have a very nice old gun that would make a great hunting gun. The gun shoulders beautifully and is light and fast handling. I will develop some mild loads for it and take it hunting as it was designed to do. I suspected that the Nazi connection was simply a mildly amusing tale. Had there been merit to the story, I expect that the firearm would have sold for a great deal of money.