They could have installed a 20 moa base on it. Even then you should still be able to zero at 100 but be almost out of ‘’down’’ adjustment. What distance are you shooting at? If they are leupold adjustable bases then that would explain the windage issues and could be adjusted out. I dont know why they would let it leave there like that. No way it would have been close on a bore sight. As said above pics would be great.