I've just heard too many stories of poor feeding with detachable mag feds to want to bet my life on one. In a panic the mag is jammed in, bending the feed lips and its nfg. A reliable old 870 with a short barrel and a surefire foregrip for light sounds best to me. Hypothetically speaking of course...
Magfed's aren't that reliable. Tried a Grizzly that a buddy bought - piece o' junk. Tactical Imports brought in a model that is supposed to be reliable, but I have no experience with it. Pump shotguns are simple and have worked since the 1800's.
In a real safe you are allowed to have a restricted and a charged mag locked in proximity, that would be your best bet. Loading a tube fed 12G would be cumbersome in a real emergency.




















































