I want to do the same thing with my Savage 10 FCP SR ... Can you please update us on how things work?

Is this what you bought?

SAVAGE SHORT ACTION BOTTOM METAL KIT

The Accurate-Mag bottom metal kit is Savages OEM premier direct drop in bottom metal kit that uses Accurate-Mag magazines. Designed and built by engineers at Accurate-Mag, it is built from 6061-T6 and anodized for a flat black finish. The bottom metals are designed for Accu-Stock rifles or can be inletted for a savage rifle stock. These bottom metal kits are only for rifles with bolt release mechanisms built into the rifle, not in the trigger guard.
The Accurate-Mag bottom metal kit
is Savages OEM premier direct drop in
bottom metal kit that usesAccurate-Mag magazines.
Kit Includes:
Magazine Well Assembly – includes magazine well machined, latch, spring & pin.
Trigger Guard
Item Cartridge Capacity Length
01200-0006-03 .308WIN 5 3.050
01200-0006-07 .300WSM 3 3.050
01200-0006-04 .308WIN 10 3.050
01200-0006-05 .300WSM 7 3.050