Yeah, thats probably worse.
worst weapon? Lack of wits lol... also any weapon you have no experience with...
Fire i agree with initial posters back in 2008 lol VERY VERY BAD! Chainsaw apart from splatter the noise will alert every zed within a mile that you're there...
Fire isn't as bad of a weapon as you might think, although I wouldnt want to use fire for the simple fact that it will take longer to take one down that a bullet. Fire will burn off muscle and connective tissue effectively making the zombie a burning motionless corpse. However, while the are still living they can walk into lots of things and set them on fire aswell including buildings, or if your in the woods...well the woods lol. that would suck.
i think that any weapon that you have to get in 4 ft or less is a bad weapon. guns are ok but noise attracts them.
I agree the shotgun is a very good choice, however I disagree on a few points.
1. I would prefer the #5 buckshot at closer ranges.
2. A 500 series Mossberg is going to be heavier than say your standard Ruger 10/22.
3. You would be able to carry alot more .22lr ammo than 12ga.
4. A shotgun will be louder.
Now having said all that, truth is I would want both. My choice of mossberg would be the 590-A1. Due to max ammo capacity & bayonet lug just in case.