I agree with Muskett because even though a break barrel might be as accurate as a fixed barrel they wont stay like it long term because the barrel hinges every shot this means that the hinge bolt, shims and what ever stops the barrel when closing must wear in time, if you have a break barrel without barrel droop or rise one day it will have rise and not only will the accuracy change the transfer port bore alignment will change, it will take a lot of use though
Although break barrels are fast and fun and we like them, fixed barrels are the ultimate springer