I'll go with my standard "Only One Gun" answer; Savage 24 357/20 gauge. For ammo in the limits of this discussion, one box of 5 slugs, one box of 25 #4 shot and a box of 20 158 grain JHP. The ammo is very easy to scrounge. I could "find" a revolver to go with it. I would scope it with a 1 power 30mm or 45mm Red Dot. This will take anything that can fly or walk east of the Mississippi!

And I think more about hiding and eating than hunting Zombies (Unless I was on the island of Hispaniola-Haiti!)

If I'm wrong about the Zombies; I'll be Zombie scat in a few days!

Ivan