I have a Savage SA with 4.2 action screw spacing and top/side bolt release. These came with the Stagger feed internal magazines. If I put this action in a xlr or mdt chassis that allows for 4.2 or 4.4 action screw spacing, should I be able to use the AICS mags without any feeding issues? Are there other dbm stock options for the 4.2 spacing savages? Thanks in advance.