Magazine Modification

How hard would it be to modify the feed lips of a box magazine to work in a different firearm? I'm looking to use a BAR magazine in my older stagger feed Savage 110 8mm-06.

Adapting the magazine to the action was fairly easy, but getting the bolt to work reliably with the feed lips isn't.

Any thoughts?

I have been looking at the same thing in a different caliber. I think the trick is the angle of the magazine. The head must touch just the case rim in just the right angle.

Move the mag down a little bit?