I think that for any material help, you'd need a series of good photos showing acton area from the top, barrel breech area & bottom metal areas. The '17 Enfield mentioned above has a rather distinctive wide bottom metal pattern. Seems to me the formula here, to help yourself... Help us help you with good pix. As far as mauser 'nuances', another story though large ring or small ring should be discernable.
Best & Keep Safe!
John