was just thru Oxford yesterday!
you might not need to do anything with the mag box or follower, I was just tossing it out as a potential problem seeing your going to be feeding a straight walled cartridge.
fwiw, when I did my Remington 700, there were no issues with the stock 308 follower and FTX bullets, XTP's were hit or miss till I swapped that follower with a WSM size which feeds both flawlessly now.
There is a guy in Grand Blanc that puts a bunch of Savages together, Norm Fox I think is his name. He'd have way more insight than me on a Savage.