Can anybody give me the dimensions of the magazine of a Magnum Mauser chambered for 404 Jeffrey. It would be much appreciated.

Don't know the exact specs but I ran it through the program I use for sixing mag boxes and came up with this.
Don

Case dims per norma:
Length to shoulder 2.001
Width of shoulder 0.530
Width of base 0.543
Max cartridge overall length 3.530


Magazine box dimensions are based on .300 of receiver feed rail capacity, .003 dust clearance,
.190 follower thickness, and .060 additional length, adjust formula accordingly.


Magazine length 3.590
Box width at shoulder 0.992
Box width at rear 1.016
Box width at front 0.973
Box height at shoulder 1.480
Box height at rear 1.519
Box height at front 1.449



Taper rate per side 0.006

Don
Thank you for the very helpful post. Just what I was looking for.
dave

There is a good discussion here.