If you have mounted the bases and rings properly, then you have a problem.
It can only be 4 things. The scope holes in your firearm are drilled wrong(out of alignment), The base is bad, the rings are bad, or the scope is bad.
Your problem is basically an elimination factor. You need to eliminate these variables one at a time. That is a pain in the butt, but it is the only way to do it properly.
I normally start with checking the bases and rings, and then trying another scope first.
If you have to reverse the rings in order to get it to work then you still have a problem. You should not have to reverse the rings. If you do then the base is probably bad, or the holes are drilled improperly. Do not settle for a quick fix. Determine what is at fault and correct it. Tom.