Hiya Matt,
Just checked with mine to confirm. If you remove the top (serrated) round cover and the BDC (Bullet Drop Compensator) collar, the one with the '+' and '-' numbers on it will come off. This has a stop pin in it to stop you doing more than 360 degrees. You should now, hopefully, have a lot more vertical travel.
I think the Weihrauch scopes are very good and compliment a classic rifle.
HTH
Ian.