I've said it before, I'll say it again. Never use a shotgun as your goto zombie weapon. Foolish. I should know.
It's great for onesy twosey, but zombies travel in hordes. The reload time is murder and the ammo, while effective, is heavy and bulky. Even 100 shotgun shells in magazines (thinking Saiga) is monstrous to carry compared to 100 rounds of .223 in magazines.
Oh, but you plan to hole up in the perfect shelter on cement stilts and take potshots at the shamblors gathered around your compound? You need reach-out-and-touch ability of a rifle. And would you rather have a storeroom full of cased rifle ammo versus 12 gauge in boxes? You'd cram 3 times as much rifle ammo in there.
A shotgun is a backup weapon at best. For the pot and to repel boarders in a desperate last stand type of thing before you dog the blastdoor shut.
Though the linked article does detail some interesting survival accoutrement that could apply to many long guns. The mini-bayonet might not be the most effective in that configuration, admittedly. Like your primary weapon. Your rifle.
Flying Killer Robots - The Pending Killer Robot Apocalypse got a little bit closer recently with the first full size drone launches from an aircraft carrier. *--Fighter pilot...
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