GG375,
Here's the link to your new owners manual.
Krieghoff's Classic Double rifle owners manual

If you look at page 8 & 9 it says, turning the set screw on the front sight between the barrels "COUNTER CLOCKWISE" will spead the barrels and separate your shots.
If you look down the barrels as you turn the screw 1/4 turn you will see the barrels separating.

Hope this helps

I really like my Krieghoff and getting used to the cocking mechanism was easy.