Buy a second rifle
For practice, you can easily use the 10m settings. As focus for 10m shooting is on consistancy. Placement of the shots can be easily adjusted with the sights.
So it doesnt really matter where the groups end up.
I use this type of practice shooting for almost all my matchgun shooting. I focus on groups/consistancy, not on where they end up.
This way, I never have to alter my sights.
Another way is, aiming off. Find out how far yr off and make a second bull/aimingpoint o yr target