BB68

It is quite possible the holes are off. I have that on my Model 12 F/TR in .223.

For vertical, obviously use a rail with whatever +/- you need. For lateral (and the method I used for my problem was Burris Signature Z rings on a rail. With the right combination of Burris' inserts you can get maximum +/- 40 by using two sets of +/-20 inserts.

I don't know how much you are going to have to pay Savage for custom work on changing caliber but as of six months ago, they will not sell a customer (me) a new barrel.