If that's a Hauck, it would be the very rare (like unseen...) "miniature Hauck"! The Hauck's I've seen are much beefier, plus the other differences as noted. Very German, and very neat.
Personally I wouldn't chamber it for REALLY hot ctgs. without knowing a lot more about it (including the 5.6x50R), but maybe .25-35 for an all 'rounder? Loaded right, it's a gopher to deer stalking rifle--call it a 6.35x52R for consistency? Could the present barrel be rebored to .25-35 (another fix the old guys approved of)?
