For reference... Here is a 75 A-Max loaded .010" INTO the lands. You won't be shooting bullets much longer than this...
IIRC....the round was loaded at 2.41". It looks as if there is too much space, but that's not the case. There is a slight bevel inside the mag box that can't been seen in the picture. I know there is a minimum of 2.5" of usable mag space. I'll get a max measurement later today...
I enjoy handguns and I really like shotguns,...but I love rifles!