[circlecity]

So, basically any 12 gauge shotgun in working order.

[gundog]

Corrosion resistance a plus, especially anywhere near the coast.

[RainMan]

I have a Rock Island Armory VR-80 Semi-Automatic 12 Guage with a 20 round drum and can empty the clip in 3 seconds. WAY faster than a pump action. As my EOTWAWKI first weapon, I have it loaded with some Dragon’s Breath (Magnesium shot that burns at 5000 degrees). I could have the bear cooked medium rare before he hit the ground. :p