Received Savage factory center feed DBM today. Popped the base off and the fit inside my blind stagger 4.275 stock was perfect. Ground the hook off the rear of the mag to make it fit the receiver, I'd seen people mill the receiver but I figured I'd cut up the mag instead. Fits perfectly.

I still couldn't get it to feed, fooled with the lips for a couple of hours. I ended up pitching the factory plastic follower and milling an aluminum one. No more nose dives, now I have a 2 shot mag