hahah i sense sarcasm.
but in reality, we all held fast to a rule that you only use your pistols on zombies. You only use your primary weapon with tank. this allows you to stay held up in your little corner a lot longer, since most times there is only one source of ammo and its generally far away. 4 smart people, crouching for better aim, using double pistols can take down a surprisingly alot of zombies