Accurate mag bottom metal will replace the stock savage bottom metal with out any problems. Straight swap.

Bolt release on the New FCP-SR is at the top which is good, because rifles with bottom bolt release don't jive with aftermarket bottom metals, and require either a sear swap (which requires the top bolt release sear to be cut and welded on an angle to clear the receiver and the stock must be cut where the top bolt release goes through ir) or some other means of releasing the bolt. But this doesn't matter with the new fcp-sr.