this is what its looks, the barrel get's the original contour and proof is mandatory. its all about the norma 9,3x57 factory load why this caliber was chosen. this rifle here allready sell over christmas+new year.
I read it more than once that some MS where rebored in sweden before the war for the popular 9,3x57. maybe possible with a 9x56MS barrel but never realy find such a rifle till now.