Niklas, I can't imagine it would hurt a Sauer. I shot 1 1/8 oz American pheasant loads in a pre-WWII Sauer 16 for years, before I knew about stuff like different pressures for European vs American guns. That being said, the key issue is the service pressure for which the gun was built vs the pressure generated by the load in question--which, as indicated above, will likely go up (but probably not much) when fired in a slightly shorter chamber.