Wait a minit. Are these the brain eating type zombies or the general, carnivorous, kill you and eat you all up type zombies?
If they’re just simple brain eaters, then a headshot will put them down for the count. All the documentaries back that up.
The “kill you and eat you all up” zombies... if its those ones, yeah, we need cannons.
Cannons and flame throwers.
And hand grenades.