You don’t actually have to open up the bolt face, just reshape the extractor. It requires that the extractor doesn’t have as much engagement length as well as changing the angle of the extractor face and polishing it to make it easier to snap over the cartridge rim similar to what Ruger did on the tang safety M-77. I am not recommending it, just saying it is possible.
The problem is possibly in the feed lips since the Swede cartridge is slightly fatter than the 7.92. Unfortunately altering the feed lips is a non reversible alteration. Proceed carefully. Try a new mag spring first.
