"the person who suggested a 22 caliber rifle is correct about finding ammo. but the premise that a 22 caliber rifle can do enough damage is shakey at best.

in living humans you must damage the part of the brain just above the spinal cord. the rest of the brain is not needed for the body to move its arms and legs. most of the brain above this area is used to decide were to go and what to do.

to kill a zombie instantly you need to damage the base of the brain. the only reason a bullet will stop a zombie is that when a bullet hits human flesh it causes a shockwave that damage the flesh surrounding the bullet path this shockwave damages the base of the brain allowing the zombie to be stoped instantly.

you would spend too much time aiming with a 22 rifle because the damage it causes is so small.

when dealing with zombies you need to spend the least amount of time aiming"

"why arnet crosbows in the firearms section,the bolts are renewable,also many crossbows can be used to fire other items,making your own stakes to fire may not be to difficult with a knife again it's all retreivable"